CN115320017A

CN115320017A - Injection molding machine for producing expansion screw sleeves

Info

Publication number: CN115320017A
Application number: CN202210999481.6A
Authority: CN
Inventors: 尹练军
Original assignee: Ningbo Sardis Hardware Products Co ltd
Current assignee: Ningbo Sardis Hardware Products Co ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-11-11

Abstract

The application relates to an injection molding machine for producing expansion screw sleeves, which mainly relates to the technical field of special injection molding machines for producing special parts and comprises a feeding mechanism, a preheating mechanism communicated with the feeding mechanism, an injection molding machine body communicated with the preheating mechanism and a feeding mechanism arranged at the discharge end of the injection molding machine body; the feeding mechanism comprises a supporting arm fixedly arranged on the injection molding machine body, a sliding rail rotationally connected with the supporting arm, a lifting cylinder slidably connected with the sliding rail and a clamping jaw arranged at one end, close to the ground, of the lifting cylinder; and the rotating shaft of the sliding rail and the supporting arm when the sliding rail and the supporting arm rotate relatively is parallel to the ground. The application has the advantages of high automation degree and high production efficiency.

Description

Injection molding machine for producing expansion screw sleeves

Technical Field

The application relates to the technical field of special injection molding machines for producing special parts, in particular to an injection molding machine for producing expansion screw sleeves.

Background

The expansion screw is also called as an expansion nail and an expansion screw, generally comprises a screw rod, an expansion screw sleeve and other parts, and is a fastening connecting piece which utilizes the wedge-shaped inclination of the screw rod to promote the expansion screw sleeve to expand to generate friction bond stress so as to achieve the fixing effect. The expansion screw is simple and convenient to install and operate, firm in structure and widely applied to the fastening and installation of protective guards, awnings, air conditioners and other equipment.

Currently, expansion screws can be classified into metal expansion screws and plastic expansion screws according to the classification of the material of the expansion screw sleeve. Among them, as for the plastic expansion screw sleeve among the plastic expansion screws, it is common in the industry to mass-produce them using an injection molding machine. However, because the plastic expansion screw sleeves are small in size, in order to increase the number of plastic expansion screw sleeves capable of being produced by single injection, the cavities of the injection molds are usually designed in a row mode that a plurality of plastic expansion screw sleeves are arranged in series in a single point and in parallel. Compared with the design of a single forming die, due to the increase of contact points and contact areas, the stripping and blanking processes of the plastic expansion screw sleeve row are easy to be adhered or blocked, which can bring adverse effects to the continuity of the production process of the plastic expansion screw sleeve and the quality of a finished product.

In view of the above-mentioned related technologies, the inventor considers that there is now a need for a special injection molding machine capable of producing plastic expansion screw sleeves, so as to improve the production efficiency and the production quality.

Disclosure of Invention

In order to reduce the adhesion or the stuck phenomenon that plastics expansion screw cover appears in the injection molding machine in the unloading in-process of drawing of patterns, improve the production quality and the production efficiency of plastics expansion screw cover, this application provides an injection molding machine for producing expansion screw cover.

The application provides an injection molding machine for producing inflation screw cover adopts following technical scheme:

an injection molding machine for producing expansion screw sleeves comprises a feeding mechanism, a preheating mechanism communicated with the feeding mechanism, an injection molding machine body communicated with the preheating mechanism and a feeding mechanism arranged at the discharge end of the injection molding machine body; the feeding mechanism comprises a supporting arm fixedly arranged on the injection molding machine body, a sliding rail rotationally connected with the supporting arm, a lifting cylinder slidably connected with the sliding rail and a clamping jaw arranged at one end, close to the ground, of the lifting cylinder; and the rotating shaft of the sliding rail and the supporting arm when rotating relatively is parallel to the ground.

By adopting the technical scheme, the feeding mechanism plays a role in feeding plastic particle raw materials into the preheating mechanism, the preheating mechanism plays a role in temporarily storing, preheating and heating the fed plastic particle raw materials to facilitate subsequent injection molding processes, the injection molding machine body connected with the preheating mechanism can heat the plastic particle raw materials to a molten state, then the plastic particles in the molten state are injected into the row of molds special for the plastic expansion screw sleeves, the feeding mechanism arranged at the discharge end of the injection molding machine body can demould and take out the plastic expansion screw sleeves subjected to injection molding from the row of molds and place the plastic expansion screw sleeves at the same position, so that finished products are conveniently centralized processed, the rotating connection structure of the supporting arm and the sliding rails in the feeding mechanism enables the clamping jaw to rotate in space, the sliding connection structure between the lifting cylinder and the sliding rails enables the clamping jaw to move in the space along the horizontal direction, the movement of the telescopic end of the lifting cylinder enables the clamping jaw to move in the space along the direction vertical to the ground, the finished expansion screw sleeves can be clamped and discharged under the action of the electric control system, the phenomenon that the clamping and the plastic expansion screw sleeves are adhered in the injection molding machine is reduced, and the production efficiency is improved.

Optionally, rubber pads are symmetrically sleeved at one end of the clamping jaw close to the ground; the surface of the rubber pad is provided with anti-skid lines.

Through adopting above-mentioned technical scheme, the clamping jaw is close to ground one end promptly the clamping jaw and gets the rubber pad that the one end that the object contacted mutually set up of clamp can increase the clamping jaw on the one hand and be got the contact friction between the object by the clamp, reduces the condition that the object normally drops from the clamping jaw and appears, and on the other hand plays the buffering and reduces the effect of centre gripping wearing and tearing, has further improved product quality.

Optionally, the sliding rail comprises a connecting frame rotatably connected with the supporting arm and guide rods parallelly arranged on two sides of the connecting frame; the fixed end of the lifting cylinder is sleeved on the guide rod.

Through adopting above-mentioned technical scheme, the link has played and has formed the effect that rotates connection structure and provide the support for the guide bar with the support arm, and the guide bar has played limiting displacement and guide effect to the removal of lift cylinder along the horizontal direction.

Optionally, one end of the guide rod, which is far away from the support arm, is provided with a limit block.

Through adopting above-mentioned technical scheme, the one end fixed mounting's of support arm stopper both can improve the mechanical structure intensity between guide bar and the support frame is kept away from to the guide bar, improves the bearing capacity and the life of this application, can play the effect that the position was injectd to the cover again to the motion of establishing the lift cylinder that takes place relative slip on the guide bar, avoids the lift cylinder slippage from the guide bar.

Optionally, the feeding mechanism comprises a charging barrel fixedly arranged on the ground, a negative pressure fan arranged on one side of the charging barrel, and a feeding pipe and an exhaust pipe, both ends of which are respectively communicated with the charging barrel and the preheating mechanism; and two ends of the exhaust pipe are respectively communicated with the preheating mechanism and the negative pressure fan.

Through adopting above-mentioned technical scheme, the feed cylinder has played the effect of stacking the plastic granules, and negative-pressure air fan can send into preheating mechanism with the plastic granules of stacking in the feed cylinder as power with negative pressure convulsions, and the conveying pipe gets into the route of preheating mechanism as the plastic granules, and the blast pipe can be sent back the feed cylinder to a small amount of plastic granules of being taken out in preheating mechanism.

Optionally, a notch is arranged at one end of the feeding pipe close to the charging barrel.

Through adopting above-mentioned technical scheme, the breach that the one end that the conveying pipe is close to the feed cylinder was seted up makes the conveying pipe insert the resistance that the in-process of plastic granules received littleer, when being convenient for install, has increased the conveying pipe and has been close to the area of contact of feed cylinder one end and plastic granules, has reduced the condition of jam, has further promoted the production efficiency and the use convenience of this application.

Optionally, the preheating mechanism comprises a storage tank, a heating tank communicated with the bottom of the storage tank, and a blower; an air outlet of the blower is communicated with the bottom of the heating tank; the bottom of the heating tank is communicated with the injection molding machine body.

Through adopting above-mentioned technical scheme, the holding vessel has played the effect that temporary storage comes from feed mechanism's plastic granules, and the heating jar that the holding vessel links to each other can preheat plastic granules, conveniently carries out further processing to it, and the air-blower that communicates with heating tank bottoms portion can be through the strand mode regulation heating tank inside temperature of going into cold wind, makes the temperature dimension of heating tank inside steady in certain extent.

Optionally, the top of the storage tank is provided with a turnover cover; the flip cover is clamped with the storage tank through a buckle.

Through adopting above-mentioned technical scheme, the fixed flip of buckle that the storage tank top set up can make things convenient for relevant staff to open flip to observe the unloading condition in the storage tank, conveniently in time overhaul after the jam takes place.

Optionally, an overhaul pipe is arranged at one end of the heating tank close to the bottom; the maintenance pipe is communicated with the interior of the heating tank.

Through adopting above-mentioned technical scheme, the heating jar is close to the maintenance pipe that bottom one end set up and can make things convenient for the staff to observe the unloading condition of heating jar and injection molding machine body feed inlet department, and the convenience is in time overhauld after the jam takes place.

Optionally, a heat preservation baffle is arranged on the side wall of the outer surface of the heating tank; the heat preservation baffle is detachably connected with the heating tank.

Through adopting above-mentioned technical scheme, the heat preservation baffle that heating jar surface lateral wall set up has played the effect that slows down heating jar temperature to radiation loss in the space, and the structural design who can dismantle the connection between heat preservation baffle and the heating jar makes things convenient for relevant staff to regularly change the heat preservation baffle that has reachd life, guarantees that the heat preservation effect is not influenced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the feeding mechanism plays a role in feeding plastic particle raw materials into the preheating mechanism, the preheating mechanism plays a role in temporarily storing, preheating and heating the fed plastic particle raw materials to facilitate subsequent injection molding processes, an injection molding machine body connected with the preheating mechanism can heat the plastic particle raw materials to a molten state, then the plastic particles in the molten state are injected into a special row of molds for plastic expansion screw sleeves, a feeding mechanism arranged at the discharge end of the injection molding machine body can demold and take out the plastic expansion screw sleeves subjected to injection molding from the row of molds and place the plastic expansion screw sleeves at the same position, so that finished products are conveniently centralized processed, a rotary connecting structure of a supporting arm and a sliding rail in the feeding mechanism enables a clamping jaw to rotate in a space, a sliding connecting structure between a lifting cylinder and the sliding rail enables the clamping jaw to move in the space along a horizontal direction, the movement of a telescopic end of the lifting cylinder enables the clamping jaw to move in the space along a direction vertical to the ground, the clamping jaw can clamp and discharge the finished products of the expansion screw sleeves under the action of an electric control system, the phenomenon that the plastic expansion screw sleeves are adhered or stuck in the blanking process in a pause process is reduced, and the production efficiency of the injection molding machine is improved;

2. the rubber pad arranged at one end, close to the ground, of the clamping jaw, namely the end, in contact with the clamped object, of the clamping jaw can increase the contact friction force between the clamping jaw and the clamped object and reduce the abnormal falling of the object from the clamping jaw, and plays a role in buffering and reducing clamping abrasion, so that the product quality is further improved;

3. the heat preservation baffle that heating jar surface lateral wall set up in this application has played the effect that slows down heating jar temperature to radiation loss in the space, and the structural design who can dismantle the connection between heat preservation baffle and the heating jar makes things convenient for relevant staff to regularly change the heat preservation baffle that has reachd life, guarantees that the heat preservation effect is not influenced.

Drawings

Fig. 1 is a schematic structural diagram of an injection molding machine for producing an expansion screw sleeve, which is disclosed in an embodiment of the application.

Fig. 2 is a schematic structural view of a preheating mechanism in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of a feeding mechanism in an embodiment of the present application.

Description of the reference numerals: 1. a feeding mechanism; 11. a charging barrel; 12. a negative pressure fan; 13. a feed pipe; 14. an exhaust pipe; 131. a notch; 2. a preheating mechanism; 21. a storage tank; 22. a heating tank; 23. a blower; 211. a cover is turned; 221. repairing the pipe; 222. a heat preservation baffle plate; 3. an injection molding machine body; 4. a feeding mechanism; 41. a support arm; 42. a slide rail; 43. a lifting cylinder; 44. a clamping jaw; 441. a rubber pad; 421. a connecting frame; 422. a guide bar; 423. and a limiting block.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The expansion screw is a common fastening connecting piece and has wider application in the fields of installation of outdoor equipment such as sunshades, air-conditioning external hanging machines and the like, indoor decoration and the like. The expansion screw may be roughly classified into a plastic expansion screw and a metal expansion screw according to the material of the expansion screw sleeve externally fitted. At present, when a common injection molding machine is used for producing a plastic expansion screw sleeve of a plastic expansion screw, a finished product is easy to adhere and clamp with a mold cavity after injection molding. In order to reduce the adhesion or the stuck phenomenon that plastics expansion screw cover appears in the injection molding machine in the unloading in-process of drawing of patterns, improve the production quality and the production efficiency of plastics expansion screw cover, this application provides an injection molding machine for producing expansion screw cover.

The embodiment of the application discloses an injection molding machine for producing an expansion screw sleeve. Referring to fig. 1, the injection molding machine for producing the expansion screw sleeve includes a feeding mechanism 1, a preheating mechanism 2, an injection molding machine body 3, and a feeding mechanism 4. The injection molding machine comprises an injection molding machine body 3, a feeding mechanism 1, a preheating mechanism 2 and a feeding mechanism 4, wherein the injection molding machine body 3 is installed on a base fixed on the ground, the feeding mechanism 1 is located on one side of the injection molding machine body 3, the preheating mechanism 2 is installed on the injection molding machine body 3 and is communicated with a feeding hole of the injection molding machine body 3, and the feeding mechanism 4 is installed at one end, close to a discharging hole, of the injection molding machine body 3.

Referring to fig. 1, the charging mechanism 1 includes a charging barrel 11, a negative pressure fan 12, a feeding pipe 13, and an exhaust pipe 14. Wherein, feed cylinder 11 can be a top open-ended hollow metal cylinder, and feed cylinder 11 fixed mounting is subaerial, is located one side of injection molding machine body 3, and negative-pressure air fan 12 fixed mounting is in one side of feed cylinder 11, and conveying pipe 13 and blast pipe 14 can be the hollow screwed pipe of plastic material, and feed cylinder 11 and preheating mechanism 2 are respectively distinguished at the both ends of conveying pipe 13, and the both ends of blast pipe 14 communicate with preheating mechanism 2 and negative-pressure air fan 12 respectively, and negative-pressure air fan 12's the end of giving vent to anger communicates in with feed cylinder 11. One end of the feeding pipe 13 close to the charging barrel 11 is provided with a notch 131.

Referring to fig. 1 and 2, the preheating mechanism 2 includes a storage tank 21, a heating tank 22, and a blower 23. The storage tank 21 may be a cylindrical hollow metal tank. The storage tank 21 is opened with two openings, which are respectively communicated with the exhaust pipe 14 and the feeding pipe 13. A flip cover 211 is mounted on the top of storage tank 21, and flip cover 211 is rotatably connected to storage tank 21 and is fastened to storage tank 21 by a snap. The bottom of the storage tank 21 is communicated with the top of the heating tank 22, and an electromagnetic valve is arranged between the storage tank 21 and the heating tank 22 for controlling the discharge. The heating tank 22 may be a hollow cylindrical metal cylinder with resistance heating wires inside. An inspection pipe 221 is installed at one end of the heating tank 22 away from the storage tank 21, that is, at the bottom of the heating tank 22, and the inspection pipe 221 communicates with the inside of the heating tank 22. The end of the service pipe 221 is fixedly mounted with an end cover by means of bolt connection. A plurality of heat insulating baffles 222 are mounted on the side wall of the heating tank 22 by means of bolts. The blower 23 is installed at one side of the heating tank 22, and an air outlet of the blower 23 is communicated with the bottom of the heating tank 22.

Referring to fig. 1 and 3, the feeding mechanism 4 includes a support arm 41, a slide rail 42, a lifting cylinder 43, and a gripping jaw 44. The support arm 41 is vertically installed on one side of the injection molding machine body 3 close to the discharge end, the slide rail 42 is connected with the support arm 41 along the horizontal direction, and the slide rail 42 is rotatably connected with the support arm 41. The slide rail 42 and the support arm 41 can rotate relatively, and the rotation axis of the slide rail 42 is in a horizontal plane parallel to the ground. The lifting cylinder 43 is sleeved on the slide rail 42 and is connected with the slide rail 42 in a sliding manner. The clamping jaw 44 is mounted on the telescopic end of the lifting cylinder 43 by means of a bolt connection. A rubber pad 441 is fixedly arranged at one end of the clamping jaw 44 close to the ground, namely, the end of the clamping jaw 44 contacting with the clamped object in a liquid glue bonding mode. The rubber pad 441 is provided with anti-skid grains.

Referring to fig. 3, the slide rail 42 includes a connection frame 421, a guide rod 422, and a stopper 423. The connecting frame 421 may be a metal bracket formed by welding a rotating shaft and two supporting circular tubes, and the rotating shaft of the connecting frame 421 is inserted into the circular hole of the supporting arm 41 along a direction parallel to the ground, so as to form a rotating connection structure between the sliding rail 42 and the supporting arm 41. The guide rod 422 can be a solid metal polish rod, and the guide rod 422 is fixedly welded and installed on the inner sides of the two supporting circular tubes along the direction parallel to the axes of the supporting circular tubes. Each support tube is provided with a guide rod 422. The two guide rods 422 are arranged parallel to each other. One end of the guide rod 422 far away from the support arm 41 is fixedly provided with a limit block 423 in a welding mode.

The implementation principle of the injection molding machine for producing the expansion screw sleeve comprises the following steps: firstly, a large amount of plastic particle raw materials are stacked in the charging barrel 11, then the feeding pipe 13 is inserted into the plastic particles, the heating tank 22 in the preheating mechanism 2 is electrified for a period of time to be preheated, then the air blower 23 is started, the internal temperature of the heating tank 22 is adjusted according to different raw material component proportions, the injection molding machine body 3 is electrified to be preheated, and then the negative pressure air blower 12 is started, so that the processing can be started. Finished products after injection molding can be clamped by the clamping jaws 44 and separated from the mold, the lifting cylinder 43 can control the clamping jaws 44 to move along the direction perpendicular to the ground, the sliding connection structure between the lifting cylinder 43 and the sliding rail 42 can control the movement of the clamping jaws 44 in the horizontal direction, so that the clamping jaws 44 can be aligned with the discharge port of the injection molding machine body 3, and the structure that the sliding rail 42 is rotatably connected with the supporting arm 41 enables the clamping jaws 44 to reciprocate above the discharge port of the injection molding machine body 3 and outside the injection molding machine body 3, so that the clamping jaws 44 can finish clamping and discharging actions.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An injection molding machine for producing expansion screw sleeves is characterized in that: the injection molding machine comprises a feeding mechanism (1), a preheating mechanism (2) communicated with the feeding mechanism (1), an injection molding machine body (3) communicated with the preheating mechanism (2) and a feeding mechanism (4) arranged at the discharge end of the injection molding machine body (3); the feeding mechanism (4) comprises a supporting arm (41) fixedly arranged on the injection molding machine body (3), a sliding rail (42) rotatably connected with the supporting arm (41), a lifting cylinder (43) in sliding connection with the sliding rail (42), and a clamping jaw (44) arranged at one end, close to the ground, of the lifting cylinder (43); and the rotating shaft of the sliding rail (42) and the supporting arm (41) when the sliding rail and the supporting arm rotate relatively is parallel to the ground.

2. An injection molding machine for producing an expansion screw sleeve according to claim 1, wherein: rubber pads (441) are symmetrically sleeved at one end, close to the ground, of the clamping jaw (44); the surface of the rubber pad (441) is provided with anti-skid grains.

3. An injection molding machine for producing an expansion screw sleeve according to claim 1, wherein: the sliding rail (42) comprises a connecting frame (421) rotatably connected with the supporting arm (41) and guide rods (422) parallelly arranged on two sides of the connecting frame (421); the fixed end of the lifting cylinder (43) is sleeved on the guide rod (422).

4. An injection molding machine for producing an expansion screw sleeve according to claim 3, wherein: and a limiting block (423) is arranged at one end, far away from the supporting arm (41), of the guide rod (422).

5. An injection molding machine for producing an expansion screw sleeve according to claim 1, wherein: the feeding mechanism (1) comprises a charging barrel (11) fixedly arranged on the ground, a negative pressure fan (12) arranged on one side of the charging barrel (11), and a feeding pipe (13) and an exhaust pipe (14) of which the two ends are respectively communicated with the charging barrel (11) and the preheating mechanism (2); and two ends of the exhaust pipe (14) are respectively communicated with the preheating mechanism (2) and the negative pressure fan (12).

6. An injection molding machine for producing an expansion screw sleeve according to claim 5, wherein: one end of the feeding pipe (13) close to the charging barrel (11) is provided with a notch (131).

7. An injection molding machine for producing an expansion screw sleeve according to claim 1, wherein: the preheating mechanism (2) comprises a storage tank (21), a heating tank (22) communicated with the bottom of the storage tank (21) and a blower (23); an air outlet of the blower (23) is communicated with the bottom of the heating tank (22); the bottom of the heating tank (22) is communicated with the injection molding machine body (3).

8. An injection molding machine for producing an expansion screw sleeve according to claim 7, wherein: the top of the storage tank (21) is provided with a flip cover (211); the flip cover (211) is clamped with the storage tank (21) through a buckle.

9. An injection molding machine for producing an expansion screw sleeve according to claim 7, wherein: one end of the heating tank (22) close to the bottom is provided with an overhaul pipe (221); the maintenance pipe (221) is communicated with the interior of the heating tank (22).

10. An injection molding machine for producing an expansion screw sleeve according to claim 7, wherein: a heat preservation baffle (222) is arranged on the side wall of the outer surface of the heating tank (22); the heat preservation baffle (222) is detachably connected with the heating tank (22).