Anti-adhesion feeding device for injection molding machine

Abstract

The utility model discloses an anti-adhesion feeding device for an injection molding machine, which comprises an injection molding machine body, a feeding hopper, a diversion cone, a first guide chute, a second guide chute, an opening degree adjusting mechanism and a confluence hopper, and the diversion cone is provided with a plurality of diversion channels which are downwards and obliquely arranged along the circumferential direction. According to the injection molding machine, injection molding raw materials can be uniformly distributed by the distribution cone, the distributed injection molding raw materials can be converged and conveyed into the injection molding machine body by the convergence hopper, the injection molding raw materials can flow more uniformly by adopting a flow mode of distributing and then converging, and the injection molding raw materials can be dispersed into different distribution channels through distribution, so that the injection molding efficiency is improved. The adhesion condition caused by excessive accumulation of injection molding raw materials in one place is avoided; the ceramic coating is coated on the inner wall surface of the confluence hopper, so that the wear resistance and the corrosion resistance of the confluence hopper can be improved, the friction loss is reduced, and the service life of the hopper is prolonged; meanwhile, the surface of the ceramic coating is smooth, adhesion of injection molding raw materials in the hopper can be reduced, and the flowing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of injection molding machine feeding devices, in particular to an anti-adhesion feeding device for injection molding machines. Background Art

[0002] An injection molding machine is a molding device that uses a plastic molding mold to make thermoplastic plastics or thermosetting plastics into plastic products of various shapes. The injection molding machine can heat the plastic, apply high pressure to the molten plastic, make it eject and fill the mold cavity, and wait for it to cool down in order to obtain the required plastic product. The injection molding machine is mainly composed of a feed hopper, a conveying screw, a heating device, and a nozzle.

[0003] In the prior art, when the feed hopper is in use, if the feeding speed is too fast, it is easy to cause the injection molding material to not flow evenly inside the feed hopper, resulting in blockage; if the feeding speed is too slow, it is easy to cause the injection molding material with high humidity to stagnate for too long in the feed hopper, thereby adhering a layer of injection molding material to the inner wall of the feed hopper. As the use time increases, more and more injection molding material will adhere to the inner wall of the feed hopper, thereby increasing the risk of blockage and affecting the normal operation of the injection molding machine.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an anti-adhesion feeding device for an injection molding machine which can make the injection molding raw materials flow evenly and reduce the risk of blockage.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: an anti-adhesion feeding device for an injection molding machine, comprising an injection molding machine body, a feeding hopper, a diverter cone, a first material guide trough, a second material guide trough, an opening adjustment mechanism and a converging hopper;

[0007] The feed hopper is arranged above the injection molding machine body, and the feed hopper is used to convey injection molding raw materials;

[0008] The diverter cone is arranged below the feed hopper, and the diverter cone is provided with a plurality of diverter channels inclined downward along the circumferential direction, and the diverter channels are used to divert the injection molding raw materials transported from the feed hopper to the diverter cone;

[0009] The first material guide groove is arranged below the diversion channel, and the second material guide groove is arranged below the first material guide groove, and the first material guide groove is used to guide the diverted injection material into the second material guide groove;

[0010] The bottoms of the first material guide trough and the second material guide trough are both connected to the opening adjustment mechanism, and the opening adjustment mechanism is used to adjust the opening size of the first material guide trough and the second material guide trough for material dropping;

[0011] The confluence hopper is arranged below the second material guide trough, the confluence hopper is a polygonal pyramid structure, and the inner wall surface of the confluence hopper is coated with a ceramic coating;

[0012] The bottom of the converging hopper is communicated with the screw conveyor of the injection molding machine body, and the converging hopper is used to converge and convey the injection molding raw materials dropped from the plurality of the second material guide grooves into the injection molding machine body.

[0013] According to the above technical solution, in the anti-adhesion feeding device for injection molding machine, the opening adjustment mechanism includes a swing arm driving assembly, a first closing plate, a second closing plate, a first connecting rod, a second connecting rod, a torsion spring and an adjusting swing arm;

[0014] The first material guide trough or the second material guide trough has a discharge port at the bottom, and the first sealing plate and the second sealing plate are movably connected to both sides of the discharge port respectively;

[0015] The first sealing plate and the second sealing plate are connected via the first connecting rod, and the first sealing plate is connected to the adjusting swing arm via the second connecting rod;

[0016] A fixing plate is provided at the side end of the adjusting swing arm, the adjusting swing arm is connected to the fixing plate via a movable shaft, and the adjusting swing arm can rotate around the axis direction of the movable shaft;

[0017] The torsion spring is sleeved on the movable shaft, and one end of the torsion spring is connected to the fixed plate, and the other end of the torsion spring is connected to the adjusting swing arm. The torsion spring is used to apply an upward rotating elastic force to the adjusting swing arm so that the first sealing plate and the second sealing plate are brought closer to each other and closed;

[0018] A pressure plate is provided at one end of the adjusting swing arm away from the second connecting rod, and the swing arm driving assembly is used to abut against the pressure plate to apply downward rotation pressure to the adjusting swing arm to cause the first sealing plate and the second sealing plate to separate from each other.

[0019] By adopting the above-mentioned technical solutions, in the anti-adhesion feeding device for injection molding machine, the swing arm driving assembly includes a mounting seat, a driving motor and a swing pressure rod;

[0020] The driving motor is arranged in the mounting seat, and the output shaft of the driving motor is connected to the swing pressure rod so as to drive the swing pressure rod to rotate and abut against the pressure plate of the adjusting swing arm.

[0021] By adopting the above-mentioned technical solutions, in the anti-adhesion feeding device for injection molding machine, the width of the diversion channel gradually increases from top to bottom.

[0022] By adopting the above-mentioned technical solutions, in the anti-adhesion feeding device for injection molding machine, the top opening edges of the first material guide trough and the second material guide trough are provided with anti-overflow baffles.

[0023] By adopting the above-mentioned technical solutions, in the anti-adhesion feeding device for injection molding machine, the volume of the first material guiding trough is greater than the volume of the second material guiding trough.

[0024] By adopting the above-mentioned technical solutions, in the anti-adhesion feeding device for injection molding machine, the number of the diversion channels is ten.

[0025] By adopting the above-mentioned technical solutions, in the anti-adhesion feeding device for injection molding machine, a trumpet cover is provided at the bottom of the feeding hopper.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] The diverter cone of the utility model can evenly divert the injection molding raw materials, and the converging hopper can converge the diverted injection molding raw materials and transport them into the injection molding machine body. The diverting and then converging flow mode can make the injection molding raw materials flow more evenly. Through diversion, the injection molding raw materials can be dispersed into different diversion channels, avoiding the situation that the injection molding raw materials accumulate too much in one place and stick together. Subsequently, the diverted injection molding raw materials are re-converged through the converging hopper to ensure that the injection molding raw materials can flow evenly to the injection molding machine, thereby reducing the possibility of adhesion; the multi-faceted cone structure arranged on the converging hopper can increase the surface area of ​​the converging hopper, thereby reducing the risk of blockage; the ceramic coating coated on the inner wall of the converging hopper can not only improve the wear resistance and corrosion resistance of the converging hopper, reduce friction loss, and extend the service life of the hopper; at the same time, the ceramic coating has a smooth surface, which can reduce the adhesion of the injection molding raw materials in the hopper and improve the flow efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the partial explosion structure of the utility model;

[0032] Figure 3 This is a schematic diagram of the diverter cone structure of the utility model;

[0033] Figure 4 It is a schematic diagram of the structure of the opening adjustment mechanism of the utility model. DETAILED DESCRIPTION

[0034] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, 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.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] like Figures 1 to 4As shown, the embodiment of the utility model provides an anti-adhesion feeding device for an injection molding machine, comprising an injection molding machine body 1, a feeding hopper 2, a diverter cone 3, a first guide trough 4, a second guide trough 5, an opening adjustment mechanism 6 and a converging hopper 7;

[0038] The feed hopper 2 is arranged above the injection molding machine body 1, and the feed hopper 2 is used to convey injection molding raw materials. The diverter cone 3 is arranged below the feed hopper 2, and the diverter cone 3 is provided with a plurality of diverter channels 30 inclined downward along the circumferential direction, and the diverter channels 30 are used to divert the injection molding raw materials conveyed from the feed hopper 2 to the diverter cone 3; the injection molding raw materials are conveyed from the feed hopper 2 to the diverter channels 30 of the diverter cone 3 for uniform diversion, which can reduce the flow resistance of the injection molding raw materials during the flow conveying process, avoid blockage caused by excessive accumulation of the injection molding raw materials during the flow, improve the flow efficiency, and reduce the adhesion of the injection molding raw materials.

[0039] The first material guide trough 4 is arranged below the diversion channel 30, and the second material guide trough 5 is arranged below the first material guide trough 4. The first material guide trough 4 is used to guide the diverted injection molding material into the second material guide trough 5; the first material guide trough 4 and the second material guide trough 5 can temporarily store a certain amount of injection molding material, so that the injection molding material supply is more stable. Such a setting can balance the supply speed of the injection molding material, so that the injection molding machine can obtain appropriate raw material supply at different stages to avoid the situation of too fast or too slow supply.

[0040] The bottoms of the first material guide trough 4 and the second material guide trough 5 are connected to the opening adjustment mechanism 6, and the opening adjustment mechanism 6 is used to adjust the blanking opening size of the first material guide trough 4 and the second material guide trough 5; by adjusting the blanking opening of the first material guide trough 4 or the second material guide trough 5, the supply speed of the injection molding material can be controlled; if it is necessary to increase the production speed, the opening can be appropriately expanded to increase the supply of the injection molding material; on the contrary, if it is necessary to slow down the production speed, the opening can be reduced to reduce the supply of the injection molding material; in this embodiment, the first material guide trough 4 is used as a temporary storage trough to supplement the supply of injection molding raw materials.

[0041] The converging hopper 7 is arranged below the second material guide trough 5, and the converging hopper 7 has a polygonal pyramid structure. The inner wall surface of the converging hopper 7 is coated with a ceramic coating (not shown). The bottom of the converging hopper 7 is connected to the screw conveyor of the injection molding machine body 1. The converging hopper 7 is used to converge the injection molding raw materials falling from multiple second material guide troughs 5 and convey them into the injection molding machine body 1. The material flow mode of diversion and re-convergence can realize a more uniform flow of the injection molding raw materials. Through diversion, the injection molding raw materials are dispersed into different diversion channels 30, avoiding the situation where the injection molding raw materials accumulate too much in one place and stick together. The diverted injection molding raw materials are then gathered again to ensure that the injection molding raw materials can flow evenly to the injection molding machine, thereby reducing the possibility of adhesion. The setting of the multi-faceted pyramid structure can increase the surface area of ​​the converging hopper 7, thereby reducing the risk of blockage and improving the stability and reliability of the equipment. The ceramic coating coated on the inner wall of the converging hopper 7 can not only improve the wear resistance and corrosion resistance of the converging hopper 7, reduce friction loss, and extend the service life of the hopper; at the same time, the ceramic coating has a smooth surface, which can reduce the adhesion of the injection molding raw materials in the hopper and improve the flow efficiency.

[0042] like Figure 4As shown, further, the opening adjustment mechanism 6 includes a swing arm driving assembly 61, a first sealing plate 62, a second sealing plate 63, a first connecting rod 64, a second connecting rod 65, a torsion spring 66 and an adjusting swing arm 67. The bottom of the first material guide trough 4 or the second material guide trough 5 has a discharge port, the first sealing plate 62 and the second sealing plate 63 are respectively movably connected to both sides of the discharge port, the first sealing plate 62 and the second sealing plate 63 are connected by the first connecting rod 64, and the first sealing plate 62 is connected to the adjusting swing arm 67 by the second connecting rod 65. The side end of the adjusting swing arm 67 is provided with a fixing plate 68, and the adjusting swing arm 67 is connected to the fixing plate 68 through a movable shaft 69. The adjusting swing arm 67 can rotate around the axis direction of the movable shaft 69. The torsion spring 66 is sleeved on the movable shaft 69, and one end of the torsion spring 66 is connected to the fixing plate 68, and the other end of the torsion spring 66 is connected to the adjusting swing arm 67. The torsion spring 66 is used to apply an upward rotating elastic force to the adjusting swing arm 67, so that the first sealing plate 62 and the second sealing plate 63 are closed together. A pressure plate 671 is provided at one end of the adjusting swing arm 67 away from the second connecting rod 65, and the swing arm driving assembly 61 is used to abut against the pressure plate 671 to apply downward rotation pressure to the adjusting swing arm 67, so as to cause the first sealing plate 62 and the second sealing plate 63 to separate from each other; when the swing arm driving assembly 61 is not in action, the torsion spring 66 can apply upward rotation elastic force to the adjusting swing arm 67, at which time the first sealing plate 62 and the second sealing plate 63 are closed together. In this state, the opening of the discharge port is small, which can limit the flow of the injection molding material, thereby controlling the supply of the injection molding material. feeding amount; when the swing arm driving component 61 is in motion, it can abut against the pressure plate 671 on the adjusting swing arm 67 to prompt the adjusting swing arm 67 to rotate downward, thereby driving the first sealing plate 62 and the second sealing plate 63 to separate. At this time, the opening of the discharge port will be enlarged, thereby increasing the supply amount of injection molding raw materials; through the operation of the swing arm driving component 61, the distance between the first sealing plate 62 and the second sealing plate 63 can be controlled, and then the blanking opening size of the first material guide trough 4 or the second material guide trough 5 can be adjusted, so as to adjust the opening in real time according to production needs to meet different production requirements and supply speeds.

[0043] like Figure 4 As shown, further, the swing arm driving assembly 61 includes a mounting seat 611, a driving motor (not shown) and a swing pressure rod 612. The driving motor is arranged in the mounting seat 611. The output shaft of the driving motor is connected to the swing pressure rod 612 to drive the swing pressure rod 612 to rotate and abut against the pressure plate 671 of the adjusting swing arm 67. When the driving motor rotates, the swing pressure rod 612 can be driven to rotate, so as to abut against the pressure plate 671 of the adjusting swing arm 67, so as to adjust the blanking opening.

[0044] like Figure 3 As shown, further, the width of the diversion channel 30 gradually increases from top to bottom. Such an arrangement can reduce the resistance of the injection molding material during flow.

[0045] like Figure 4 As shown, further, the top opening edges of the first material guide trough 4 and the second material guide trough 5 are provided with anti-overflow baffles 41. The setting of the anti-overflow baffles 41 can prevent the injection molding raw materials from spilling out from the side ends when receiving the injection molding raw materials, thereby reducing the waste of resources.

[0046] like Figure 4 As shown, further, the volume of the first material guide trough 4 is greater than the volume of the second material guide trough 5. In this embodiment, the first material guide trough 4 is used as a primary temporary storage trough to store more injection molding materials, and the supply flow rate is controlled by adjusting the opening size of the bottom, while the second material guide trough 5 is used to receive part of the injection molding materials and converge them into the converging hopper 7 below.

[0047] like Figure 3 As shown, further, the number of the diversion channels 30 is ten.

[0048] like Figure 1 and Figure 2 As shown, further, a bell cover 21 is provided at the bottom of the feed hopper 2. The bell cover 21 can guide the injection molding raw material to flow into the diversion channel 30, thereby preventing the injection molding raw material from accumulating and clogging at the feed port.

[0049] The diverter cone 3 of the utility model can evenly divert the injection molding raw material, and the converging hopper 7 can converge the diverted injection molding raw material and transport it to the injection molding machine body 1. The diverting and then converging flow mode can make the injection molding raw material flow more evenly. Through diversion, the injection molding raw material can be dispersed into different diverter channels 30, avoiding the situation where the injection molding raw material accumulates too much in one place and sticks together. Then, the diverted injection molding raw material is re-collected through the converging hopper 7 to ensure that the injection molding raw material can flow evenly to the injection molding machine, thereby reducing the possibility of adhesion; the multi-faceted cone structure set on the converging hopper 7 can increase the surface area of ​​the converging hopper 7, thereby reducing the risk of blockage; the ceramic coating coated on the inner wall of the converging hopper 7 can not only improve the wear resistance and corrosion resistance of the converging hopper 7, reduce friction loss, and extend the service life of the hopper; at the same time, the ceramic coating has a smooth surface, which can reduce the adhesion of the injection molding raw material in the hopper and improve the flow efficiency.

[0050] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An anti-adhesion feeding device for an injection molding machine, characterized in that: It includes an injection molding machine body, a feed hopper, a diverter cone, a first material guide trough, a second material guide trough, an opening adjustment mechanism and a converging hopper; The feed hopper is arranged above the injection molding machine body, and the feed hopper is used to convey injection molding raw materials; The diverter cone is arranged below the feed hopper, and the diverter cone is provided with a plurality of diverter channels inclined downward along the circumferential direction, and the diverter channels are used to divert the injection molding raw materials transported from the feed hopper to the diverter cone; The first material guide groove is arranged below the diversion channel, and the second material guide groove is arranged below the first material guide groove, and the first material guide groove is used to guide the diverted injection material into the second material guide groove; The bottoms of the first material guide trough and the second material guide trough are both connected to the opening adjustment mechanism, and the opening adjustment mechanism is used to adjust the opening size of the first material guide trough and the second material guide trough for material dropping; The confluence hopper is arranged below the second material guide trough, the confluence hopper is a polygonal pyramid structure, and the inner wall surface of the confluence hopper is coated with a ceramic coating; The bottom of the converging hopper is communicated with the screw conveyor of the injection molding machine body, and the converging hopper is used to converge and convey the injection molding raw materials dropped from the plurality of the second material guide grooves into the injection molding machine body.

2. The anti-adhesion feeding device for injection molding machine according to claim 1, characterized in that: The opening adjustment mechanism includes a swing arm driving assembly, a first closing plate, a second closing plate, a first connecting rod, a second connecting rod, a torsion spring and an adjusting swing arm; The bottom of the first material guide trough or the second material guide trough is provided with a discharge port, and the first sealing plate and the second sealing plate are respectively movably connected to both sides of the discharge port; The first sealing plate and the second sealing plate are connected via the first connecting rod, and the first sealing plate is connected to the adjusting swing arm via the second connecting rod; A fixing plate is provided at the side end of the adjusting swing arm, the adjusting swing arm is connected to the fixing plate via a movable shaft, and the adjusting swing arm can rotate around the axis direction of the movable shaft; The torsion spring is sleeved on the movable shaft, and one end of the torsion spring is connected to the fixed plate, and the other end of the torsion spring is connected to the adjusting swing arm. The torsion spring is used to apply an upward rotating elastic force to the adjusting swing arm so that the first sealing plate and the second sealing plate are brought closer to each other and closed; A pressure plate is provided at one end of the adjusting swing arm away from the second connecting rod, and the swing arm driving assembly is used to abut against the pressure plate to apply downward rotation pressure to the adjusting swing arm to cause the first sealing plate and the second sealing plate to separate from each other.

3. The anti-adhesion feeding device for injection molding machine according to claim 2, characterized in that: The swing arm driving assembly includes a mounting seat, a driving motor and a swing pressure rod; The driving motor is arranged in the mounting seat, and the output shaft of the driving motor is connected to the swing pressure rod so as to drive the swing pressure rod to rotate and abut against the pressure plate of the adjusting swing arm.

4. The anti-adhesion feeding device for injection molding machine according to claim 1, characterized in that: The width of the diversion channel increases gradually from top to bottom.

5. The anti-adhesion feeding device for injection molding machine according to claim 1, characterized in that: The top opening edges of the first material guiding trough and the second material guiding trough are provided with anti-overflow baffles.

6. The anti-adhesion feeding device for injection molding machine according to claim 1, characterized in that: The volume of the first material guiding trough is greater than the volume of the second material guiding trough.

7. The anti-adhesion feeding device for injection molding machine according to claim 1, characterized in that: The number of the diversion channels is ten.

8. The anti-adhesion feeding device for injection molding machine according to claim 1, characterized in that: A trumpet cover is provided at the bottom of the feed hopper.

Images