CN114789536A

CN114789536A - B ultrasonic probe protection gum cover device of moulding plastics

Info

Publication number: CN114789536A
Application number: CN202210424823.1A
Authority: CN
Inventors: 韩彤亮; 李同霞; 刘刚; 马西顺
Original assignee: Qingdao Municipal Hospital
Current assignee: Qingdao Municipal Hospital
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-07-26

Abstract

The invention relates to the technical field of injection molding machines, and discloses a B-ultrasonic probe protective rubber sleeve injection molding device which comprises a base, a screw rod, a fixed die, a movable die and an injection molding channel, wherein a sliding cavity is formed in the left inner part of the middle part of the screw rod. According to the invention, by designing the sliding cavity, the spring, the sliding rod, the spiral blade, the movable cavity, the movable plate, the air bag and the push rod, when the injection molding machine is used for demolding, the movable mold moves leftwards to drive the push rod to move leftwards and drive the movable plate to move leftwards to extrude the air bag, so that part of air in the air bag enters the sliding groove to push the plug block to move, the injection molding channel is blocked by the plug block, the air in the air bag enters the air outlet hole through the air outlet groove along with the continuous movement of the movable mold and finally enters the injection molding channel, the left side in the injection molding channel is blocked by the plug block, so that the air can only push the sliding rod to drive the spiral blade to move rightwards, and the residual molten plastic raw material in the injection molding channel is brought into the charging barrel by the design of the spiral blade, thereby avoiding waste caused by the molten plastic raw material in the injection molding channel being brought out.

Description

B ultrasonic probe protection gum cover device of moulding plastics

Technical Field

The invention relates to the technical field of injection molding machines, in particular to a B-ultrasonic probe protective rubber sleeve injection molding device.

Background

The type-B ultrasonic probe utilizes the material characteristics of reflection, refraction and the like of ultrasonic waves in human tissues to receive signals through an instrument so as to display the forms of various tissues and organs, and the outer side of the probe of the type-B ultrasonic probe is wrapped by a protective rubber sleeve for protecting the normal use of the probe.

The production of the protective rubber sleeve of the B-ultrasonic probe can not be separated from the use of an injection molding machine, the injection molding machine is a device which makes thermoplastic plastics or thermosetting plastics into various shapes by utilizing a plastic forming die, the plastic raw materials are mainly added into a charging barrel, the heating element in the charging barrel is utilized to promote the plastics to be melted, and then the melted plastics are injected into the die to be formed by rotating and moving a screw rod, while the existing injection molding machine has the defects that a large amount of melted plastics are remained in an injection molding channel after the injection molding is finished, and the melted plastics are connected with a formed finished product, so that the raw materials can be taken out together when the injection molding machine is demolded, unnecessary waste is caused, meanwhile, the injection finished product is easy to be clamped on a fixed die because the melted plastics in the injection molding channel are connected with the injection finished product, and mechanisms are all arranged on a movable die, so that the finished product clamped on the fixed die is difficult to remove, thereby affecting the work efficiency of the injection molding machine.

Disclosure of Invention

Aiming at the defects of the prior injection molding machine in the use process, the invention provides a B-ultrasonic probe protective rubber sleeve injection molding device which has the advantages of pressing the molten plastic raw material in an injection molding channel into a charging barrel, reducing the waste of the raw material, facilitating the demolding on a fixed die, preventing the residual molten plastic raw material in the injection molding channel from having different product qualities due to different viscosities of the raw material in the charging barrel, and solving the technical problems in the background art.

The invention provides the following technical scheme: a B-ultrasonic probe protective rubber sleeve injection molding device comprises a base, a screw, a fixed mold, a movable mold and an injection molding channel, wherein a sliding cavity is formed in the left inner part of the middle part of the screw, a spring is fixedly connected to the bottom of the sliding cavity, a sliding rod is connected to the inner part of the sliding cavity in a sliding manner through a flat key, a spiral blade is fixedly connected to the outer side of the left end of the sliding rod, movable cavities are formed in the inner part of the fixed mold and positioned on the upper side and the lower side of the injection molding channel, a movable plate is connected to the inner part of the movable cavity in a sliding manner, an air outlet groove is formed in the inner part of the movable plate, an air bag is fixedly connected to the left side of the movable cavity, a sliding groove is formed in the inner part of the fixed mold and positioned on the left side of the movable cavity, a pressure spring is fixedly connected to the top of the sliding groove, a plug block is fixedly connected to the top of the pressure spring, a through groove is formed in the inner part of the fixed mold and positioned between the movable cavity and the sliding groove, an air outlet hole is formed in the inner part of the fixed mold and positioned between the movable cavity and the injection molding channel, air inlets are formed in the upper side and the lower side of the fixed die, and push rods are fixedly connected to the upper end and the lower end of the right side face of the movable die.

Preferably, a key groove matched with the flat key is formed in the sliding cavity, the left end of the spring is fixedly connected with the right end face of the sliding rod, the sliding rod stretches into the injection molding channel at the air outlet when in a stretching state, and the circumferential side face of the spiral blade is in contact with the inner side wall of the injection molding channel.

Preferably, a hole for the push rod to slide is formed in the fixed die, the right end of the push rod extends into the movable cavity and is fixedly connected with the left end face of the movable plate, and the side face of the movable plate is in sliding contact with the inner side wall of the movable cavity.

Preferably, the left end face of the air bag is fixedly connected with the left end face of the movable cavity, the air bag is communicated with the air outlet groove, the air outlet groove is communicated with the air outlet hole when the movable plate is located at the leftmost stroke in the movable cavity, and the air outlet groove is communicated with the air inlet hole when the movable plate is located at the rightmost stroke in the movable cavity.

Preferably, the sliding grooves are communicated with the air bag through the through grooves, the number of the sliding grooves is two, the two sliding grooves are symmetrically distributed on the upper side and the lower side of the injection molding channel by taking the injection molding channel as the center, the sliding grooves are communicated with the injection molding channel, and the side face of the chock block is in sliding contact with the side face of the sliding grooves.

Preferably, the venthole will move about the chamber and mould plastics the passageway switch-on, the venthole sets up to the inclined hole that is partial to left, the quantity of venthole is two, two the venthole uses the passageway of moulding plastics as center and symmetric distribution in the upper and lower both sides of the passageway of moulding plastics.

The invention has the following beneficial effects:

1. according to the invention, through designing the sliding cavity, the spring, the sliding rod, the spiral blade, the movable cavity, the movable plate, the air bag and the push rod, when the injection molding machine is used for demolding, the movable die moves leftwards to drive the push rod to move leftwards and drive the movable plate to move leftwards to extrude the air bag, so that part of air in the air bag enters the sliding groove to push the plug block to move, the injection molding channel is blocked by the plug block, the air in the air bag enters the air outlet hole through the air outlet groove along with the continuous movement of the movable die and finally enters the injection molding channel, and the left side in the injection molding channel is blocked by the plug block, so that the air can only push the sliding rod to drive the spiral blade to move rightwards, and the residual molten plastic raw material in the injection molding channel is brought into the charging barrel by the design of the spiral blade, thereby avoiding waste caused by the molten plastic raw material in the injection molding channel being brought out.

2. According to the injection molding machine, the movable cavity, the movable plate, the air outlet and the push rod are designed, the push rod is used for driving the movable plate to move when the movable mold moves, then the movable plate extrudes gas in the movable cavity, at the moment, the gas in the movable cavity enters the air outlet through the extrusion of the movable plate and finally enters the injection molding channel, if the injection molding finished product is clamped on the fixed mold, the gas exhausted from the air outlet acts on the injection molding finished product, so that the injection molding finished product clamped on the fixed mold is separated, and the working efficiency of the injection molding machine is improved.

3. According to the invention, by designing the sliding cavity, the spring, the sliding rod, the spiral blade, the movable cavity, the movable plate, the air bag and the push rod, the plug block is pushed to move by partial gas in the air bag, so that the plug block extends into the injection molding channel, the molten plastic raw material in the injection molding channel can be cut off under the action of the plug block, then the gas in the air bag continuously enters the injection molding channel through the gas outlet hole so that the sliding rod moves to the right, and the spiral blade is used for driving the molten plastic raw material in the injection molding channel to enter the charging barrel, so that the difference of product quality caused by the difference of viscosity between the residual plastic raw material in the injection molding channel and the raw material in the charging barrel is avoided, and the quality consistency of finished products produced by the injection molding machine is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of an integral half-section three-dimensional structure of the present invention;

FIG. 3 is a schematic view of the internal structure of the screw of the present invention;

FIG. 4 is a schematic view of the overall internal structure of the present invention;

FIG. 5 is a schematic view of the movable plate of FIG. 4 in a left-moving state according to the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 4 according to the present invention.

In the figure: 1. a base; 2. a charging barrel; 3. a heating device; 4. a hopper; 5. a screw; 51. a slide chamber; 52. a spring; 53. a slide bar; 54. helical leaves; 6. a nozzle; 7. fixing a mold; 71. a movable cavity; 72. a movable plate; 721. an air outlet groove; 73. an air bag; 74. a chute; 741. a pressure spring; 742. a chock block; 75. a through groove; 76. an air outlet; 77. an air inlet; 8. moving the mold; 81. a push rod; 9. and (4) injection molding the channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Please refer to fig. 1-5, a B-ultrasonic probe protective gum cover injection molding device, which comprises a base 1, wherein a charging barrel 2 is fixedly installed near the right side in the middle of the top surface of the base 1, a heating device 3 is fixedly installed on the side wall of the inner cavity of the charging barrel 2, a hopper 4 is arranged on the right side of the top of the charging barrel 2, a screw rod 5 is movably installed in the middle of the charging barrel 2, a nozzle 6 is fixedly installed at the left end of the screw rod 5, a fixed die 7 is fixedly installed at the left side of the nozzle 6, a movable die 8 is slidably installed at the top of the base 1 and on the left side of the fixed die 7, and an injection molding channel 9 is formed inside the joint of the charging barrel 2, the nozzle 6 and the fixed die 7.

Referring to fig. 1 to 6, a sliding cavity 51 is formed inside the middle portion of the screw 5 close to the left, a spring 52 is fixedly connected to the bottom of the sliding cavity 51, a sliding rod 53 is slidably connected inside the sliding cavity 51 through a flat key, a key slot matched with the flat key is formed inside the sliding cavity 51, the left end of the spring 52 is fixedly connected to the right end face of the sliding rod 53, it is ensured that the screw 5 can drive the sliding rod 53 to rotate, the sliding rod 53 can slide in the sliding cavity 51 under the action of the spring 52 and the flat key, a spiral blade 54 is fixedly connected to the outer side of the left end of the sliding rod 53, the circumferential side face of the spiral blade 54 is in contact with the inner side wall of the injection molding channel 9, so that the spiral blade 54 can scrape the molten plastic raw material in the injection molding channel 9 into the barrel 2, movable cavities 71 are formed inside the fixed mold 7 and located at the upper and lower sides of the injection molding channel 9, a movable cavity 72 is formed inside the movable cavity 71, a movable plate 72 is slidably connected to the inside of the movable cavity 71, the movable cavity 72, the side face of the movable plate 72 is in sliding contact with the inner side wall of the movable cavity 71, ensuring that the air in the movable cavity 71 can be extruded when the movable plate 72 moves, an air outlet slot 721 is formed in the movable plate 72, an air bag 73 is fixedly connected to the left side surface of the movable plate 72, the left side surface of the air bag 73 is fixedly connected to the left end surface of the movable cavity 71, the air bag 73 is communicated with the air outlet slot 721 to facilitate the transmission of the air in the air bag 73, a sliding slot 74 is formed in the fixed mold 7 and positioned on the left side of the movable cavity 71, a pressure spring 741 is fixedly connected to the top of the sliding slot 74, a plug 742 is fixedly connected to the top of the pressure spring 741, the number of the sliding slots 74 is two, the two sliding slots 74 are symmetrically distributed on the upper side and the lower side of the injection molding channel 9 by taking the injection molding channel 9 as the center, the sliding slot 74 is communicated with the injection molding channel 9, the side of the plug 742 is in sliding contact with the side of the sliding slot 74, the injection molding channel 9 can be blocked when the plug 742 in the sliding slot 74 extends out, a through slot 75 is formed in the fixed mold 7 and positioned between the movable cavity 71 and the sliding slot 74, the chute 74 is communicated with the air bag 73 through the through groove 75, when the air bag 73 is extruded, part of air in the air bag 73 can enter the chute 74 and push against the movable plug 742 to move, two air outlets 76 are formed in the fixed die 7 and positioned between the movable cavity 71 and the injection molding channel 9, the movable cavity 71 is communicated with the injection molding channel 9 through the air outlets 76, the air outlets 76 are inclined holes deviated to the left side, the number of the air outlets 76 is two, the two air outlets 76 are symmetrically distributed on the upper side and the lower side of the injection molding channel 9 by taking the injection molding channel 9 as the center, the air in the air bag 73 can enter the injection molding channel 9 through the air outlets 76, the slide bar 53 extends into the injection molding channel 9 at the air outlets 76 when extending out, the spiral blade 54 on the slide bar 53 can scrape the molten plastic raw material in the injection molding channel 9 into the barrel 2 to prevent the waste of the raw material, the air inlets 77 are formed in the upper side and the lower side of the fixed die 7, the air outlet slot 721 is communicated with the air outlet hole 76 when the movable plate 72 is located at the leftmost stroke in the movable cavity 71, the air outlet slot 721 is communicated with the air inlet hole 77 when the movable plate 72 is located at the rightmost stroke in the movable cavity 71 to ensure that external air after the air bag 73 is stretched can enter the air bag 73, the push rods 81 are fixedly connected to the upper end and the lower end of the right side surface of the movable mold 8, a hole for the push rod 81 to slide is formed in the fixed mold 7, the right end of the push rod 81 extends into the movable cavity 71 and is fixedly connected with the left end face of the movable plate 72, and the movable plate 72 can be driven by the push rod 81 to move when the movable mold 8 moves.

Referring to fig. 1-6, when the injection molding machine is in normal use, the push rod 81 is driven to move to the left by the left movement of the movable mold 8 during demolding, and then the push rod 81 drives the movable plate 72 to move to the left to extrude the gas in the movable cavity 71, so that the gas in the movable cavity 71 enters the injection molding channel 9 through the gas outlet 76, and the gas pressure entering the chute 74 cannot overcome the potential energy of the compression spring 741, so that the plug block 742 cannot block the injection molding channel 9, if the injection molding finished product is clamped on the fixed mold 7 at this time, the injection molding finished product can be ejected out by the gas discharged from the gas outlet 76, thereby preventing the injection molding finished product from being clamped on the fixed mold 7 to reduce the working efficiency of the injection molding machine.

Referring to fig. 1-6, when the movable mold 8 and the fixed mold 7 are tightly attached to each other in an injection molding state, the movable plate 72 is driven to move rightward by the rightward movement of the push rod 81, the movable plate 72 stretches the air bag 73 to reduce the air pressure in the air bag 73 and generate a negative pressure, when the air outlet slot 721 is communicated with the air inlet hole 77, the air is driven to enter the air bag 73 by the negative pressure in the air bag 73, after the injection molding is completed, the movable plate 72 is driven to move leftward by the push rod 81, so that part of the air in the air bag 73 enters the sliding slot 74 through the through slot 75 and pushes the movable plug 742 to extend out of the injection molding channel 9 to block the injection molding channel 9, the movable plate 72 is driven to move leftward by the push rod 81, the air outlet slot 721 is communicated with the air outlet hole 76, the air in the air bag 73 enters the injection molding channel 9 and pushes the sliding rod 53, the sliding rod 53 moves leftward in the sliding cavity 51 by the cooperation of the flat key and the key slot, so that the sliding rod 53 drives the spiral vane 54 to move leftward, utilize the spiral leaf 54 to scrape into the feed cylinder 2 inside with the melting plastics raw materials of moulding plastics in the passageway 9 this moment, the waste that has avoided moulding plastics in the passageway 9 to take out when the plastics raw materials is demoulded and cause, the plastics raw materials of moulding plastics in the passageway 9 simultaneously can be reheated after being scraped into the feed cylinder 2, make its viscosity the same with the viscosity of raw materials in the feed cylinder 2, the raw materials viscosity of having avoided remaining in the passageway 9 of moulding plastics is different and the finished product quality of moulding plastics that causes is different with the raw materials viscosity in the feed cylinder 2.

The using method of the invention has the following working principle:

firstly, plastic raw materials are added into a charging barrel 2 through a hopper 4, the screw 5 is pushed by the rotation of the screw 5 and the action of an air cylinder, the melted plastic raw materials are pressed into a nozzle 6 and an injection channel 9 through the screw 5, after injection molding is finished, a push rod 81 is driven by the left movement of a movable mold 8 to move left, a movable plate 72 is driven by the push rod 81 to move left, the movable plate 72 extrudes gas in a movable cavity 71, meanwhile, the movable plate 72 extrudes an air bag 73, partial gas in the air bag 73 enters a sliding groove 74 and pushes against a movable plug 742 to move, the injection channel 9 is blocked by two plugs 742, the gas in the air bag 73 enters an air outlet 76 and finally enters the injection channel 9 along with the continuous movement of the movable mold 8, the injection channel 9 is blocked by the plugs 742, the gas pushes against a sliding rod 53, the sliding rod 53 moves right in a sliding cavity 51 through the action of a flat key and a key groove, the sliding rod 53 drives the spiral blade 54 to move rightwards, the spiral blade 54 is utilized to scrape the molten plastic raw material in the injection molding channel 9 into the charging barrel 2, when the injection molding finished product is clamped on the fixed die 7, the push rod 81 is driven to move through the left movement of the movable die 8, the push rod 81 drives the movable plate 72 to move and extrudes the gas in the movable cavity 71 into the injection molding channel 9, at the moment, the pressure of the gas entering the chute 74 does not overcome the potential energy of the pressure spring 741, the gas discharged through the gas outlet 76 acts on the injection molding finished product, the injection molding product clamped on the fixed die 7 is enabled to be separated, and the efficiency of the injection molding machine is ensured.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a B ultrasonic probe protection gum cover device of moulding plastics, includes base (1), screw rod (5), cover half (7), movable mould (8) and moulds plastics passageway (9), its characterized in that: a sliding cavity (51) is formed in the left inner part of the middle part of the screw rod (5), a spring (52) is fixedly connected to the bottom of the sliding cavity (51), a sliding rod (53) is connected to the inner part of the sliding cavity (51) in a sliding manner through a flat key, a spiral blade (54) is fixedly connected to the outer side of the left end of the sliding rod (53), movable cavities (71) are formed in the fixed die (7) and located on the upper side and the lower side of the injection molding channel (9), a movable plate (72) is connected to the inner part of the movable cavity (71) in a sliding manner, an air outlet groove (721) is formed in the movable plate (72), an air bag (73) is fixedly connected to the left side of the movable cavity (71) in the fixed die (7), a sliding groove (74) is formed in the left side of the movable cavity (71), a pressure spring (741) is fixedly connected to the top of the sliding groove (74), and a plug block (742) is fixedly connected to the top of the pressure spring (741), the inside of cover half (7) just is located and has seted up logical groove (75) between activity chamber (71) and spout (74), the inside of cover half (7) just is located activity chamber (71) and has seted up venthole (76) between moulding plastics passageway (9), inlet port (77) have all been seted up to the upper and lower both sides of cover half (7), the equal fixedly connected with push rod (81) in upper and lower both ends of movable mould (8) right flank.

2. The ultrasonic B probe protective rubber sleeve injection molding device according to claim 1, characterized in that: the inside of sliding cavity (51) is equipped with the keyway with flat key assorted, the left end of spring (52) and the right-hand member face fixed connection of slide bar (53), slide bar (53) stretch into in the passageway (9) of moulding plastics of venthole (76) department when stretching out the state, the side of the circumference of spiral leaf (54) and the inside wall contact of the passageway (9) of moulding plastics.

3. The ultrasonic B probe protective rubber sleeve injection molding device according to claim 1, characterized in that: the fixed die is characterized in that a hole for the push rod (81) to slide is formed in the fixed die (7), the right end of the push rod (81) extends into the movable cavity (71) and is fixedly connected with the left end face of the movable plate (72), and the side face of the movable plate (72) is in sliding contact with the inner side wall of the movable cavity (71).

4. The injection molding device for the protective rubber sleeve of the B ultrasonic probe according to claim 1, which is characterized in that: the left end face of the air bag (73) is fixedly connected with the left end face of the movable cavity (71), the air bag (73) is communicated with the air outlet groove (721), the air outlet groove (721) is communicated with the air outlet hole (76) when the movable plate (72) is located at the leftmost stroke in the movable cavity (71), and the air outlet groove (721) is communicated with the air inlet hole (77) when the movable plate (72) is located at the rightmost stroke in the movable cavity (71).

5. The injection molding device for the protective rubber sleeve of the B ultrasonic probe according to claim 1, which is characterized in that: the injection molding device is characterized in that the sliding grooves (74) are communicated with the air bag (73) through grooves (75), the number of the sliding grooves (74) is two, the two sliding grooves (74) are centered on the injection molding channel (9) and symmetrically distributed on the upper side and the lower side of the injection molding channel (9), the sliding grooves (74) are communicated with the injection molding channel (9), and the side face of the chock block (742) is in sliding contact with the side face of the sliding grooves (74).

6. The injection molding device for the protective rubber sleeve of the B ultrasonic probe according to claim 1, which is characterized in that: venthole (76) will move about chamber (71) and mould plastics passageway (9) switch-on, venthole (76) set up to the inclined hole that is partial to left, the quantity of venthole (76) is two, two venthole (76) are used the passageway (9) of moulding plastics as center and symmetric distribution in the upper and lower both sides of the passageway (9) of moulding plastics.