CN113334713A

CN113334713A - Propulsion device for preventing material backflow and material shortage for injection mold

Info

Publication number: CN113334713A
Application number: CN202110428896.3A
Authority: CN
Inventors: 周加友
Original assignee: Individual
Current assignee: Dongguan Shenhua Plastic Cement Hardware Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-09-03
Anticipated expiration: 2041-04-21
Also published as: CN113334713B

Abstract

The invention discloses a propulsion device for preventing material backflow and material shortage for an injection mold, which belongs to the technical field of injection molds and comprises a base body assembly, wherein a propulsion cylinder is inserted into an inner cavity of a shell in a penetrating and inserting mode; the material cutting assembly comprises a fixed pipe which penetrates through and is inserted into the inner cavity of the propelling cylinder; the brush surface assembly is arranged on one side of the material cutting assembly; according to the invention, the injection molding raw material is guided into the pushing cylinder, the movable pumping rod drives the U-shaped rod to drive the pushing ring to feed the injection molding raw material through the telescopic sleeve and the delivery pipe, the drawing rope is in a relaxed state, the diameter of the rope sleeve is changed to be tightly bound on the outer wall of the telescopic sleeve, the flow of the injection molding raw material is rapidly blocked, the raw material at the material blocking position is smoothly flowed and blocked, the problem of material shortage or material excess during material blocking is avoided, the quality of an injection molding product is improved, and meanwhile, the inner wall of the telescopic sleeve is periodically treated through the brushing surface assembly, so that the problem of scalability reduction of the telescopic sleeve caused by dried raw material is avoided.

Description

Propulsion device for preventing material backflow and material shortage for injection mold

Technical Field

The invention relates to the technical field of injection molds, in particular to a propulsion device for preventing material backflow and material shortage for an injection mold.

Background

A plastic mold is a tool which is matched with a plastic molding machine in the plastic processing industry and gives a complete configuration and accurate dimension to a plastic product. Because of the variety and processing method of plastic, and the structure of plastic molding machines and plastic products are various, the variety and structure of plastic molds are also various. A plastic mold is a tool for producing plastic articles and is formed from several component parts, the combination of which has a molding cavity. During injection molding, a mold is clamped on an injection molding machine, molten plastic is injected into a forming mold cavity and is cooled and shaped in the cavity, then an upper mold and a lower mold are separated, a product is ejected out of the mold cavity through an ejection system and leaves the mold, finally the mold is closed again for next injection molding, and the whole injection molding process is carried out in a circulating mode.

Inside need promote the plastic raw materials of melting to injection mold through the injection machine before carrying out the production shaping to moulding, can have the raw materials condition of backward flow in the current injection mold use, disclose patent number: CN112223647A, entitled inventive patent of injection mold propelling device, in the patent, the raw material is choked by a rotating striker plate, but the striker plate can push the surrounding raw material to move in the rotating process, so that the deviation of the quantity of the raw material which is propelled and introduced for injection molding is caused, and the problems of the molding quality reduction or unqualified injection molding parts are caused_，For this reason, we propose a propulsion unit for preventing material backflow and material shortage for injection molds.

Disclosure of Invention

The invention aims to provide a propulsion device for preventing material backflow and material shortage for an injection mold, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the material backflow and material shortage preventing propulsion device for the injection mold comprises,

the basal body component comprises a shell, a propelling cylinder penetrates through the inner cavity of the shell in an inserted manner, and a feeding pipe communicated with the inner cavity of the propelling cylinder is inserted on the surface of the propelling cylinder;

the material cutting assembly is arranged in the inner cavity of the propelling cylinder and comprises a fixed pipe which penetrates through the inner cavity of the propelling cylinder in an inserted manner, and a pushing cylinder is arranged at the end part of the fixed pipe;

the brush face assembly is arranged on one side of the material cutting assembly.

Furthermore, the fixed pipe is spliced with a U-shaped rod, one end of the U-shaped rod is fixedly connected with the propelling ring, the propelling ring is movably sleeved on the outer wall of the fixed pipe, the outer ring surface of the propelling ring is abutted against the inner wall of the propelling cylinder, the other end of the U-shaped rod is fixedly connected with the end part of the pumping rod, and the end part of the pumping rod is fixedly spliced with a connecting rod connected with the output end of the propelling cylinder.

Furthermore, a reinforcing annular frame is arranged at one end of the propelling cylinder, a support plate is fixedly connected to the end of the pumping rod, linkage rods which are obliquely and upwards arranged are symmetrically arranged on the surface of the support plate, a receiving pull rope is bolted to the top end of the linkage rods, a reset spring is sleeved outside the receiving pull rope, and a guide shaft is arranged above the propelling cylinder.

Further, the guiding axle level is equipped with two, just receive the stay cord and walk around the guiding axle distribution, the grooving has been seted up on the guiding axle surface, just guiding axle both ends and L type support fixed connection, L type support bottom and propulsion section of thick bamboo surface fixed connection.

Further, it is equipped with the fill shell to advance a section of thick bamboo one end interval, be connected through scalable cover between fill shell and the propulsion section of thick bamboo, scalable cover surface cover is equipped with the fag end, receive the stay cord and be the cross winding in the fag end and wear to establish the distribution, scalable cover both ends are through being the connecting piece and fill shell and the propulsion section of thick bamboo fixed connection that circumference equidistance distributes.

Further, scalable cover comprises that the skin is nylon layer, inlayer are silica gel layer structure, just fill shell surface is equipped with the tablet that is close to scalable cover, tablet surface inlays and is equipped with the sensor with external control ware electric connection, fill shell tip and delivery tube are connected.

Further, the brush face assembly comprises a support fixed in the guide pipe, a gap barrel is horizontally inserted into the surface of the support, a strip-shaped gap is formed in the surface of the gap barrel, a brush cleaning plate is arranged in the gap barrel, brushes are densely inserted into the surface of the brush cleaning plate, and the end of the gap barrel is rotatably connected with a sleeve sleeved outside the gap barrel.

Further, a rotating rod is fixedly connected to the sleeve in an inserted mode, the end portion of the rotating rod penetrates through and is inserted into the inner cavity of the support, the inner cavity of the support is provided with a driving structure fixedly connected with the end portion of the output end and the end portion of the cleaning plate, a gear rotating structure is arranged below the driving structure, and the gear rotating structure is connected with the end portion of the rotating rod.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, the injection molding raw material is guided into the pushing cylinder, the movable pumping rod drives the U-shaped rod to drive the pushing ring to feed the injection molding raw material through the telescopic sleeve and the delivery pipe, the drawing and pulling rope is in a relaxed state, the telescopic sleeve is in a stretching state for the raw material to pass through, after the material injection is finished, the pumping rod is reset, the drawing and pulling rope is tightened, the diameter of the rope sleeve is changed to be tightly bound on the outer wall of the telescopic sleeve, the material cutting is tightly bound at the middle part of the telescopic sleeve, the flow of the injection molding raw material is rapidly blocked, no redundant transverse action is generated on the flow path of the raw material, the raw material at the material cutting position is smoothly flowed and cut, the problem of material shortage or excessive material generation during material blocking is avoided, the quality of injection molding products is improved, meanwhile, the inner wall of the telescopic sleeve is periodically treated through the brushing surface assembly, and the problem of scalability reduction of the dry raw material caused by the telescopic sleeve is avoided.

Drawings

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

FIG. 2 is a schematic view of the inner cavity of the housing according to the present invention;

FIG. 3 is a schematic view of the material cutting assembly of the present invention;

FIG. 4 is a schematic view of the mounting structure of the brush face assembly relative to the material cutting assembly of the present invention;

FIG. 5 is a schematic view of a brush face assembly according to the present invention;

FIG. 6 is a schematic front cross-sectional view of FIG. 5 in accordance with the present invention.

In the figure: 100. a base assembly; 101. a housing; 102. a pusher barrel; 103. a feed pipe; 200. a material cutting assembly; 201. a fixed tube; 202. a push cylinder; 203. a U-shaped rod; 204. a connecting rod; 205. a propulsion ring; 206. reinforcing the annular frame; 207. a pumping rod; 208. a linkage rod; 209. drawing back the rope; 210. a retractable sleeve; 211. rope sleeves; 212. a return spring; 213. a guide shaft; 214. a connecting member; 215. an induction plate; 216. an L-shaped bracket; 217. a bucket shell; 218. a delivery pipe; 300. a brush face assembly; 301. a support; 302. a notched barrel; 303. cleaning the board; 304. a sleeve; 305. rotating the rod; 306. a drive structure; 307. and a gear rotating structure.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows: referring to fig. 1, the present invention provides a propulsion device for preventing material backflow and material shortage for an injection mold, comprising a base assembly 100, including a housing 101, a propulsion cylinder 102 inserted through an inner cavity of the housing 101, a feeding pipe 103 inserted in the surface of the propulsion cylinder 102 and communicated with the inner cavity thereof; the material cutting assembly 200 is arranged in the inner cavity of the propelling cylinder 102, the material cutting assembly 200 comprises a fixed pipe 201 which penetrates through the inner cavity of the propelling cylinder 102 in an inserted mode, and a pushing cylinder 202 is arranged at the end portion of the fixed pipe 201; the brush face component 300 is arranged on one side of the material cutting component 200, and the brush face component 300 is arranged on the other side of the material cutting component 200.

Referring to fig. 2-4, a U-shaped rod 203 is inserted into the fixed tube 201, one end of the U-shaped rod 203 is fixedly connected to the pushing ring 205, the pushing cylinder 202 drives the U-shaped rod 203 to drive the pushing ring 205 to move in the pushing cylinder 102, so as to introduce the injection molding material, the pushing ring 205 is movably sleeved on the outer wall of the fixed tube 201, the outer annular surface of the pushing ring is abutted against the inner wall of the pushing cylinder 102, the other end of the U-shaped rod 203 is fixedly connected to the end of the pumping rod 207, and the end of the pumping rod 207 is fixedly inserted with a connecting rod 204 connected to the output end of the pushing cylinder 202.

Referring to fig. 2-4, a reinforcing annular frame 206 is disposed at one end of the propelling cylinder 102, a support plate (not numbered) is fixedly connected to an end of the pumping rod 207, linkage rods 208 which are obliquely and upwardly disposed are symmetrically disposed on a surface of the support plate, a receiving pull rope 209 is bolted to a top end of the linkage rods 208, a return spring 212 is sleeved outside the receiving pull rope 209, and the return spring 212 is disposed so that when the material is not injected, the receiving pull rope 209 is matched with the rope sleeve 211 to tighten the retractable sleeve 210 at a middle section to block the circulation of the raw material, and the raw material is blocked on a vertical section where the raw material flows, thereby avoiding the problem that the raw material is not equal at two sides of the blocking position due to excessive material blocking action on a flow path, and further avoiding the problem of raw material missing or multiple materials, and a guide shaft 213 is disposed above the propelling cylinder 102 for steering the receiving pull rope 209.

Referring to fig. 2-4, two guide shafts 213 are horizontally disposed, the pull-in ropes 209 are distributed around the guide shafts 213, rope grooves are formed on the surfaces of the guide shafts 213, two ends of the guide shafts 213 are fixedly connected with the L-shaped bracket 216, and the bottom end of the L-shaped bracket 216 is fixedly connected with the surface of the propelling barrel 102.

Referring to fig. 2-4, a bucket-shaped shell 217 is disposed at an interval at one end of the propelling cylinder 102, the bucket-shaped shell 217 is connected with the propelling cylinder 102 through a retractable sleeve 210, a rope loop 211 is sleeved on the outer surface of the retractable sleeve 210, a drawing rope 209 is wound in the rope loop 211 in a crossing manner and distributed, the movable drawing rod 207 drives the U-shaped rod 203 to drive the propelling ring 205 to feed the injection molding raw material through the retractable sleeve 210 and the delivery pipe 218, the drawing rope 209 is in a relaxed state, the retractable sleeve 210 is in a stretched state for the raw material to pass through, after the injection is completed, the drawing rod 207 is reset, the drawing rope 209 is tightened, the diameter of the rope loop 211 is changed to be tightly bound on the outer wall of the retractable sleeve 210, the material cutting is tied at the middle of the retractable sleeve 210, the flow of the injection molding raw material is rapidly blocked, no redundant transverse motion occurs on the flow path of the raw material, so that the raw material at the material cutting position flows smoothly, the two ends of the telescopic sleeve 210 are fixedly connected with the bucket shell 217 and the propelling barrel 102 through connecting pieces 214 which are distributed at equal intervals on the circumference.

Referring to fig. 2, the retractable sleeve 210 is composed of a nylon layer as an outer layer and a silica gel layer as an inner layer, and the outer surface of the bucket-shaped shell 217 is provided with an induction plate 215 close to the retractable sleeve 210, when the retractable sleeve 210 is in a state of stretching the flowable material, the surface of the retractable sleeve is abutted against the induction plate 215, the arrangement of the induction plate 215 is convenient for the working personnel to know the current state of the retractable sleeve 210, a sensor electrically connected with an external controller is embedded in the surface of the induction plate 215, and the end of the bucket-shaped shell 217 is connected with the delivery pipe 218.

Example two: referring to fig. 4-6, the brush assembly 300 includes a bracket 301 fixed in the delivery pipe 218, a notched tube 302 is horizontally inserted into the surface of the bracket 301, a strip-shaped notch is formed in the surface of the notched tube 302, a brushing plate 303 is disposed in the notched tube 302, brushes are densely inserted into the surface of the brushing plate 303, a sleeve 304 sleeved outside the notched tube 302 is rotatably connected to the end of the notched tube 302, and a notch matched with the brushing plate 303 is formed in the surface of the sleeve 304.

Referring to fig. 5 and 6, a rotating rod 305 is fixedly inserted into a sleeve 304, an end of the rotating rod 305 penetrates through and is inserted into an inner cavity of a bracket 301, a driving structure 306 fixedly connected with an output end and an end of a cleaning plate 303 is arranged in the inner cavity of the bracket 301, the driving structure 306 is composed of a rotating cylinder and a pushing cylinder, the rotating rod 305 is driven to rotate through a gear rotating structure 307, the sleeve 304 is driven to rotate downwards, the cleaning plate 303 is pushed towards the direction of the telescopic sleeve 210 and is in rotational abutment with the inner surface of the telescopic sleeve 210, the inner wall of the telescopic sleeve 210 is periodically processed, the problem that the dry materials cause the scalability and decline of the telescopic sleeve 210 is avoided, a gear rotating structure 307 is arranged below the driving structure 306, the gear rotating structure 307 is composed of a motor and a driving gear, and the gear rotating structure 307 is connected with the end of the rotating rod 305.

The rest of the structure is the same as the first embodiment.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

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. Injection mold is with advancing device who prevents that material backward flow lacks material, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the base body assembly (100) comprises a shell (101), a propelling cylinder (102) penetrates through and is inserted into an inner cavity of the shell (101), and a feeding pipe (103) communicated with the inner cavity of the propelling cylinder (102) is inserted into the surface of the propelling cylinder;

the material cutting assembly (200) is arranged in the inner cavity of the propelling cylinder (102), the material cutting assembly (200) comprises a fixed pipe (201) which penetrates through the inner cavity of the propelling cylinder (102) in an inserted mode, and a pushing cylinder (202) is arranged at the end portion of the fixed pipe (201);

the brush face component (300) is arranged on one side of the material cutting component (200).

2. The propulsion device for preventing the material backflow and the material shortage for the injection mold according to claim 1, characterized in that: the fixed pipe (201) is inserted with a U-shaped rod (203), one end of the U-shaped rod (203) is fixedly connected with a pushing ring (205), the pushing ring (205) is movably sleeved on the outer wall of the fixed pipe (201), the outer ring surface of the pushing ring is abutted to the inner wall of a pushing cylinder (102), the other end of the U-shaped rod (203) is fixedly connected with the end of a pumping rod (207), and the end of the pumping rod (207) is fixedly inserted with a connecting rod (204) connected with the output end of a pushing cylinder (202).

3. The propulsion device for preventing the material backflow and the material shortage for the injection mold according to claim 2, characterized in that: the device is characterized in that a reinforcing annular frame (206) is arranged at one end of the propelling cylinder (102), a support plate is fixedly connected to the end of the pumping rod (207), linkage rods (208) which are obliquely and upwards arranged are symmetrically arranged on the surface of the support plate, a receiving pull rope (209) is bolted to the top end of each linkage rod (208), a reset spring (212) is sleeved outside each receiving pull rope (209), and a guide shaft (213) is arranged above the propelling cylinder (102).

4. The propulsion device for preventing the material backflow and the material shortage for the injection mold according to claim 3, characterized in that: the guide shaft (213) level is equipped with two, just receive stay cord (209) and walk around guide shaft (213) and distribute, the grooving has been seted up on guide shaft (213) surface, just guide shaft (213) both ends and L type support (216) fixed connection, L type support (216) bottom and a propulsion section of thick bamboo (102) fixed surface are connected.

5. The propulsion device for preventing the material backflow and the material shortage for the injection mold according to claim 4, characterized in that: impel a section of thick bamboo (102) one end interval and be equipped with fill shell (217), fill shell (217) and impel and be connected through scalable cover (210) between a section of thick bamboo (102), scalable cover (210) surface cover is equipped with rope sling (211), receive stay cord (209) and wear to establish the distribution in rope sling (211) for the criss-cross winding, connecting piece (214) and fill shell (217) and an propulsion section of thick bamboo (102) fixed connection that are circumference equidistance and distribute are passed through at scalable cover (210) both ends.

6. The propulsion device for preventing the material backflow and the material shortage for the injection mold according to claim 5, characterized in that: scalable cover (210) are nylon layer, inlayer by the skin and constitute for silica gel layer structure, just fill shell (217) surface is equipped with induction plate (215) that is close to scalable cover (210), induction plate (215) surface inlays and is equipped with the sensor with external control ware electric connection, fill shell (217) tip is connected with delivery tube (218).

7. The propulsion device for preventing material backflow and material shortage for the injection mold according to any one of claims 1 to 6, characterized in that: the brush face assembly (300) comprises a support (301) fixed in an outlet pipe (218), a gap barrel (302) is horizontally inserted into the surface of the support (301), a strip-shaped gap is formed in the surface of the gap barrel (302), a brush cleaning plate (303) is arranged in the gap barrel (302), brushes are densely inserted into the surface of the brush cleaning plate (303), and a sleeve (304) sleeved outside the gap barrel (302) is rotatably connected to the end of the gap barrel.

8. The propulsion device for preventing the material backflow and the material shortage for the injection mold according to claim 7, characterized in that: fixed grafting is gone up in sleeve (304) has dwang (305), dwang (305) tip runs through to be pegged graft into support (301) inner chamber, support (301) inner chamber be equipped with output and clear brush board (303) tip fixed connection's drive structure (306), drive structure (306) below is equipped with gear revolve structure (307), gear revolve structure (307) and dwang (305) end connection.