CN212241902U

CN212241902U - Internal-threaded injection molding piece mold

Info

Publication number: CN212241902U
Application number: CN201922426529.0U
Authority: CN
Inventors: 熊友红; 付勇; 刘刚; 袁正平
Original assignee: Master Technology Wuhan Co ltd
Current assignee: Master Technology Wuhan Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-12-29
Anticipated expiration: 2029-12-30

Abstract

The utility model discloses an internal screw thread injection molding mould, include upper die base, die holder and install the install bin between upper die base and die holder, the top of install bin is seted up flutedly, sliding connection has a seat and mould extremely down in proper order from last to the internal surface of recess, the middle part threaded connection at upper die base top has first screw thread post, and the bottom fixed mounting of first screw thread post surface has the thread piece, the utility model relates to an injection mold technical field. According to the internal thread injection molding piece mold and the demolding method thereof, the first thread column and the second thread column with opposite thread directions are utilized, when clockwise rotation is carried out, the thread block and the push plate can be driven to move close to each other, the ejector pin is driven to move through the steering mechanism, the ejector pin is guaranteed to demold the injection molding piece after the rotary thread block is completely separated from the injection molding piece, the damage of the internal thread is effectively avoided, and the demolding efficiency is improved while the product quality is guaranteed.

Description

Internal-threaded injection molding piece mold

Technical Field

The utility model belongs to the technical field of injection mold, concretely relates to internal screw thread injection molding mould.

Background

The injection molding product is a common daily product, and is widely applied to the fields of household products, medical equipment, building materials, sports equipment and the like due to the advantages of light weight, high strength, good durability, strong assembly and the like. In the manufacturing process of injection molding products, plastic materials in a molten state are generally uniformly stirred by a screw extruder at a certain temperature, then injected into an injection mold, molded in a cavity of the injection mold, cooled and solidified to obtain a molded injection molding product, and then the injection molding product is pushed down from the injection mold by an ejector pin.

The existing mould is driven by a motor or a hydraulic motor or is manually demoulded after mould opening, the starting time and speed of the motor are controlled to be troublesome, synchronization is difficult to achieve by using an oil cylinder, the problem that the threaded shape of a product is damaged due to pulling caused by inconsistent rotating speed of a threaded core and rhythm of mould movement often occurs in the actual production process, the demoulding operation process is complicated, and the mould can be damaged due to careless operation in the mould opening process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides an internal screw thread injection molding mould has solved in the actual production process, and the rhythm inconsistent of threaded core slew velocity and mould motion often can appear, causes the problem of drawing wounded product screw thread shape, and drawing of patterns operation process is loaded down with trivial details, still can damage the problem of module because of operating carelessly at the die sinking in-process.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides an internal screw thread injection molding mould, includes upper die base, die holder and installs the install bin between upper die base and die holder, the top of install bin is seted up flutedly, the internal surface of recess has a seat and a mould of sealing to sliding connection in proper order down from last, the middle part threaded connection at upper die base top has first screw thread post, and the bottom fixed mounting of first screw thread post surface has the screw thread piece, the top fixedly connected with second screw thread post of first screw thread post, and the screw thread trend of first screw thread post and second screw thread post is opposite, the surface threaded connection of second screw thread post has the push pedal, the equal fixed mounting in both sides of push pedal has the connecting rod, the movable groove has all been seted up to the left and right sides of die holder bottom, the internal surface rotation in movable groove is connected with steering mechanism, the bottom of connecting rod runs through upper die base, seat in proper order, seals, Mould and install bin and extend to the inside of install bin, the inside sliding connection that the bottom of install bin just is located the recess has the thimble, and the bottom of connecting rod is connected with the bottom of thimble through steering mechanism, steering mechanism sets up the inside at the movable groove.

Preferably, the steering mechanism comprises a gear, a first toothed plate and a second toothed plate, and the outer surface of the gear is meshed with the outer surface of the first toothed plate respectively.

Preferably, first dentate plate sets up under the connecting rod, and interval length sets up to the height of injection molding, the top of second dentate plate and the bottom fixed connection of thimble, the surface of gear passes through the dwang and is connected with the front and back both sides rotation of activity inslot cavity, and the bottom fixedly connected with fixture block of die holder, the top of fixture block contacts with the bottom of second dentate plate.

Preferably, the outer surface threaded connection of connecting rod has four nuts, two the nut setting is in the top of push pedal, and two nut settings are in the below of push pedal.

Preferably, the left side and the right side of the top and the bottom of the installation box are both provided with pin holes, and the left side and the right side of the bottom of the upper die base and the left side and the right side of the top of the lower die base are both fixedly connected with pin columns matched with the pin holes.

Preferably, the top of the seal seat is in close contact with the bottom of the upper die base, runners are formed in the left side of the installation box and the left side of the die, and the two runners are communicated with each other.

Preferably, the top of the second threaded column is fixedly connected with a rotating disc, and the left side and the right side of the bottom of the lower die holder are fixedly connected with heightening pads.

The utility model discloses following beneficial effect has:

(1) the internal thread injection molding piece mold is provided with a groove through the top of an installation box, the inner surface of the groove is sequentially connected with a sealing seat and a mold in a sliding manner from top to bottom, the middle part of the top of an upper mold seat is in threaded connection with a first threaded column, a threaded block is fixedly arranged at the bottom end of the outer surface of the first threaded column, a second threaded column is fixedly connected at the top end of the first threaded column, the thread trends of the first threaded column and the second threaded column are opposite, the outer surface of the second threaded column is in threaded connection with a push plate, connecting rods are fixedly arranged on the left side and the right side of the push plate, movable grooves are respectively formed in the left side and the right side of the bottom of a lower mold seat, the inner surface of each movable groove is rotatably connected with a steering mechanism, the bottom end of each connecting rod sequentially penetrates through the upper mold seat, the sealing seat, the mold and the installation box and extends to the inside of, steering mechanism sets up the inside at the movable groove, the cooperation upper die base, the die holder, the install bin, a groove, seal the seat, a mold, first screw thread post, the thread piece, the second screw thread post, the push pedal, the connecting rod, the movable groove, thimble and steering mechanism's setting, utilize first screw thread post and second screw thread post that the screw thread trend is opposite, when carrying out clockwise turning, can drive the motion that draws close each other of thread piece and push pedal, rethread steering mechanism drives the thimble motion, guarantee after rotatory thread piece breaks away from the injection molding completely, the thimble demolds the injection molding again, the internal screw thread damage has effectively been avoided, when guaranteeing product quality, demoulding efficiency has been improved.

(2) This internal screw thread injection molding mould, include the gear through steering mechanism, first dentate plate and second dentate plate, the surface of gear meshes with the surface of first dentate plate respectively mutually, first dentate plate sets up under the connecting rod, and interval length sets up the height to the injection molding, the top of second dentate plate and the bottom fixed connection of thimble, the surface of gear passes through the dwang and is connected with the front and back both sides rotation of activity inslot inner chamber, and the bottom fixedly connected with fixture block of die holder, the top of fixture block contacts with the bottom of second dentate plate, the cooperation gear, the setting of first dentate plate and second dentate plate, utilize the gear as the part that changes power direction of transfer, the effectual stability of device in the use of having guaranteed, and then the stroke direction of confirming the thimble is unanimous with the stroke direction of thread piece.

(3) This internal screw thread injection molding mould has four nuts through the surface threaded connection of connecting rod, and two nut settings are in the top of push pedal, and two nut settings are in the below of push pedal, and the setting of four nuts of cooperation, push pedal slidable mounting on the connecting rod makes things convenient for the position control of push pedal, and two nuts are as a set of simultaneously, can guarantee the stability that connecting rod and push pedal are connected.

Drawings

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

FIG. 2 is a cross-sectional view of the structure of the present invention;

fig. 3 is a partially enlarged schematic view of a portion a of fig. 2 according to the present invention;

FIG. 4 is a schematic structural view of the sealing seat of the present invention;

fig. 5 is a schematic view of the demolding process of the present invention.

Shown in the figure, 1, an upper die base; 2. a lower die holder; 3. installing a box; 4. a groove; 5. sealing a seat; 6. a mold; 7. a first threaded post; 8. a thread block; 9. a second threaded post; 10. pushing the plate; 11. a connecting rod; 12. a movable groove; 13. a thimble; 14. a steering mechanism; 15. a gear; 16. a first castellated plate; 17. a second toothed plate; 18. a nut; 19. a pin hole; 20. a pin; 21. a flow channel; 22. rotating the disc; 23. heightening pads; 24. and (7) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of the present invention provides an internal threaded injection mold, including an upper mold base 1, a lower mold base 2, and an installation box 3 installed between the upper mold base 1 and the lower mold base 2, pin holes 19 are formed on the left and right sides of the top and bottom of the installation box 3, pins 20 adapted to the pin holes 19 are fixedly connected to the left and right sides of the bottom of the upper mold base 1 and the left and right sides of the top of the lower mold base 2, a groove 4 is formed on the top of the installation box 3, a sealing seat 5 and a mold 6 are sequentially slidably connected to the inner surface of the groove 4 from top to bottom, the top of the sealing seat 5 is in close contact with the bottom of the upper mold base 1, runners 21 are formed on the left side of the installation box 3 and the left side of the mold 6, the interiors of the two runners 21 are communicated, a rotating disc 22 is fixedly connected to the top of a second threaded post 9, the, the left side and the right side of the bottom of the lower die holder 2 are fixedly connected with heightening pads 23, the middle part of the top of the upper die holder 1 is in threaded connection with a first threaded column 7, a threaded block 8 is fixedly installed at the bottom end of the outer surface of the first threaded column 7, a second threaded column 9 is fixedly connected with the top end of the first threaded column 7, the threads of the first threaded column 7 and the second threaded column 9 are opposite in trend, a push plate 10 is in threaded connection with the outer surface of the second threaded column 9, connecting rods 11 are fixedly installed at the left side and the right side of the push plate 10, four nuts 18 are in threaded connection with the outer surface of the connecting rods 11, the two nuts 18 are arranged above the push plate 10, the two nuts 18 are arranged below the push plate 10, the four nuts 18 are matched, the push plate 10 is slidably installed on the connecting rods 11, the position of the push plate 10 is convenient to adjust, and the, the left side and the right side of the bottom of the lower die holder 2 are both provided with movable grooves 12, the inner surfaces of the movable grooves 12 are rotatably connected with steering mechanisms 14, the bottom end of a connecting rod 11 sequentially penetrates through the upper die holder 1, the sealing seat 5, the die and the installation box 3 and extends into the installation box 3, the bottom of the installation box 3 is positioned in the groove 4 and is slidably connected with a thimble 13, the bottom of the connecting rod 11 is connected with the bottom of the thimble 13 through the steering mechanisms 14, each steering mechanism 14 comprises a gear 15, a first toothed plate 16 and a second toothed plate 17, the outer surface of the gear 15 is respectively meshed with the outer surface of the first toothed plate 16, the first toothed plate 16 is arranged under the connecting rod 11, the interval length is set to be the height of an injection molding piece, the top of the second toothed plate 17 is fixedly connected with the bottom of the thimble 13, the outer surface of the gear 15 is rotatably connected with the front side, and the bottom of the lower die holder 2 is fixedly connected with a fixture block 24, the fixture block 24 mainly limits the position of the second toothed plate 24, the top of the fixture block 24 is in contact with the bottom of the second toothed plate 17, the gear 15, the first toothed plate 16 and the second toothed plate 17 are matched, the gear 15 is used as a component for changing the force transmission direction, the stability of the device in the using process is effectively ensured, the stroke direction of the ejector pin 13 is further determined to be consistent with the stroke direction of the threaded block 8, the steering mechanism 14 is arranged in the movable groove 12, and the first threaded column 7, the threaded block 8, the second threaded column 9, the push plate 10, the connecting rod 11, the movable groove 12, the ejector pin 13 and the steering mechanism 14 are matched, the first threaded column 7 and the second threaded column 9 with opposite thread directions are used for clockwise rotation, can drive the screw block 8 and push pedal 10 and draw close the motion each other, rethread steering mechanism 14 drives thimble 13 motion, guarantees that after rotatory screw block 8 breaks away from the injection molding completely, thimble 13 carries out the drawing of patterns to the injection molding again, has effectively avoided the internal thread to damage, when guaranteeing product quality, has improved drawing of patterns efficiency.

The utility model also discloses a demoulding method of internal thread injection molding mould, specifically include following step:

step one, structural installation: after the structure is checked to be complete and the appearance is complete, the lower die holder 2 is arranged on an installation platform, then the installation box 3 is arranged on the lower die holder 2 in an aligning mode with the pin column 20, then the die 6 is arranged in the groove 4, the connecting rod 11 and the ejector pin 13 are aligned to the corresponding holes, meanwhile, the communication of the two flow passages 21 is guaranteed, then the seal holder 5 is arranged on the die 6, the connecting rod 11 is aligned to the corresponding holes, then the threaded block 8 needing injection molding is selected, the threaded block 8 is arranged on the first threaded column 7, then the upper die holder 1 and the first threaded column 7 are arranged in an aligning mode with the pin hole 19 in the installation box 3, the distance between the adjusting connecting rod 11 and the first toothed plate 16 is equal to or the height of an injection molding piece, then the position of the adjusting push plate 10 is rotated, and after the adjustment is finished, the nut 18 is screwed up to be;

step two, injection molding: injecting the melted material into the mold along the runner 21, attaching the melted material to the outside of the screw block 8, cooling and solidifying, and waiting for demolding;

step three, demoulding operation: directly twist and move rolling disc 22, drive second screw thread post 9 and first screw thread post 7 and rotate, wherein, first screw thread post 7 drives the screw thread piece 8 and rotates, the continuous injection molding that breaks away from, second screw thread post 9 rotates simultaneously, make push pedal 10 downstream, when screw thread piece 8 breaks away from the injection molding, push pedal 10 continues to promote connecting rod 11 downstream, contact and drive first dentate plate 16 downstream, the in-process of first dentate plate 16 motion, drive gear 15 and rotate, make second dentate plate 17 jack-up thimble 13, and then make the injection molding break away from recess 4, reach the effect of drawing of patterns.

It is noted that, herein, relational terms such as first and second, and the like may be 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. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

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 an internal thread injection molding mould, includes upper die base (1), die holder (2) and install bin (3) between upper die base (1) and die holder (2), its characterized in that: the top of the installation box (3) is provided with a groove (4), the inner surface of the groove (4) is sequentially connected with a seal seat (5) and a die (6) from top to bottom in a sliding manner, the middle part of the top of the upper die base (1) is in threaded connection with a first threaded column (7), the bottom of the outer surface of the first threaded column (7) is fixedly provided with a threaded block (8), the top end of the first threaded column (7) is fixedly connected with a second threaded column (9), the thread trends of the first threaded column (7) and the thread of the second threaded column (9) are opposite, the outer surface of the second threaded column (9) is in threaded connection with a push plate (10), the left side and the right side of the push plate (10) are both fixedly provided with connecting rods (11), the left side and the right side of the bottom of the lower die base (2) are both provided with movable grooves (12), and the inner surface, the bottom of connecting rod (11) runs through upper die base (1), seal seat (5), mould and install bin (3) in proper order and extends to the inside of install bin (3), the inside sliding connection that the bottom of install bin (3) just is located recess (4) has thimble (13), and the bottom of connecting rod (11) is connected with the bottom of thimble (13) through steering mechanism (14), steering mechanism (14) set up the inside at activity groove (12).

2. An internally threaded injection mold according to claim 1, wherein: the steering mechanism (14) comprises a gear (15), a first toothed plate (16) and a second toothed plate (17), and the outer surface of the gear (15) is meshed with the outer surface of the first toothed plate (16) respectively.

3. An internally threaded injection mold according to claim 2, wherein: first dentate plate (16) set up under connecting rod (11), and interval length sets up to the height of injection molding, the top of second dentate plate (17) and the bottom fixed connection of thimble (13), the surface of gear (15) is passed through the dwang and is connected with the front and back both sides rotation of activity groove (12) inner chamber, and the bottom fixedly connected with fixture block (24) of die holder (2), the top of fixture block (24) contacts with the bottom of second dentate plate (17).

4. An internally threaded injection mold according to claim 1, wherein: the outer surface threaded connection of connecting rod (11) has four nuts (18), two nut (18) set up the top at push pedal (10), and two nut (18) set up the below at push pedal (10).

5. An internally threaded injection mold according to claim 1, wherein: pinhole (19) have all been seted up to the left and right sides at install bin (3) top and bottom, equal fixedly connected with in the left and right sides at the left and right sides of upper die base (1) bottom and the left and right sides at die holder (2) top and pinhole (19) looks adaptation's round pin post (20).

6. An internally threaded injection mold according to claim 1, wherein: the top of seal seat (5) and the bottom in close contact with of upper die base (1), runner (21) have all been seted up to the left side of install bin (3) and the left side of mould (6), and the inside intercommunication of two runner (21).

7. An internally threaded injection mold according to claim 1, wherein: the top fixedly connected with rolling disc (22) of second screw thread post (9), the equal fixedly connected with of the left and right sides of die holder (2) bottom increases pad (23).