CN112318806A

CN112318806A - Plastic secondary foaming forming machine

Info

Publication number: CN112318806A
Application number: CN202011044980.7A
Authority: CN
Inventors: 曹禹; 张强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-02-05

Abstract

The invention relates to the field of secondary foaming forming machines, in particular to a plastic secondary foaming forming machine, which comprises a bottom plate, a material conveying mechanism, a bottom die structure, a die assembly mechanism and a clamping mechanism, wherein the bottom die structure is arranged on the upper side of the bottom plate, the material conveying mechanism is arranged on the bottom side of the bottom die structure, the die assembly mechanism is arranged on the upper side of the bottom die structure, and the clamping mechanism is arranged on the bottom die structure. The foaming material is always attached to the inner wall of the die cavity, and the shaping effect is good.

Description

Plastic secondary foaming forming machine

Technical Field

The invention relates to the field of secondary foaming forming machines, in particular to a plastic secondary foaming forming machine.

Background

The foam plastic manufacturing methods are classified into two types: a method of preparing a foamed plastic by one process after compounding plastic raw materials for foaming is called a one-step foaming method, also called a direct method, and polyurethane foamed plastic is a typical representative thereof; the process for obtaining foams by two steps, called two-step foaming process, also called batch process, in which the first step is called pre-foaming or pre-foaming, in which the foam or beads are not fully expanded and the density is higher, the beads thus obtained being expandable beads, the latter step being called post-foaming or secondary foaming, the final foam products being fully expanded and of low density being obtained, polystyrene, polyethylene foams, etc. being obtained by this process.

The existing foam plastic one-time forming machine is simple in structure, generally comprises two groups of dies and an injection molding machine, secondary foaming is carried out in a mode of directly increasing a foaming space after an injection process is completed, folds and depressions are easily formed on the surface of a foaming material in the foaming mode, and foaming forming quality is difficult to guarantee.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a plastic secondary foaming forming machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a plastics secondary foaming make-up machine, includes bottom plate, defeated material mechanism, die block structure, locking mechanism and clamping mechanism, the die block structure is installed to the upside of bottom plate, defeated material mechanism is installed to the bottom side of die block structure, the upside of die block structure is provided with locking mechanism, clamping mechanism installs at the die block structurally.

Concretely, defeated material mechanism includes feed cylinder, supporting seat, electrical heating board, pivot, helical blade, gear motor, charge door, the feed cylinder passes through the supporting seat and fixes the upside at the bottom plate, the fixed a plurality of electrical heating boards that inlay of feed cylinder inner wall, gear motor screw fixation is on a side end face of feed cylinder, the fixed one end upside of establishing at the feed cylinder and being close gear motor that inlays of charge door, gear motor's output shaft passes feed cylinder fixedly connected with pivot, pivot outer wall fixedly connected with helical blade.

The die block structure comprises a die holder, a cooling channel, a die cavity, a blocking ball, an injection channel, a drainage pipe and a drainage pipe, wherein the die cavity is arranged in the middle of the upper side of the die holder, the injection channel penetrates through the middle of the bottom side of the die cavity, the blocking cavity is formed in the middle of the injection channel, the blocking ball is arranged in the blocking cavity, the cooling channel is arranged in the die holder, the outermost side of the cooling channel is communicated with the drainage pipe, and the innermost side of the cooling channel is communicated with the drainage pipe.

Specifically, locking mechanism includes roof, traveller, fixed plate, hydraulic stem, sleeve, spring, gas vent, guide pillar, movable mould board and socket, the roof is located the top of die holder, four travellers of fixedly connected with between roof and the die holder, the upside middle part screw fixation of roof has the hydraulic stem, the hydraulic stem output passes roof fixedly connected with fixed plate, the below of fixed plate is provided with movable mould board, movable mould board's bilateral symmetry is provided with a plurality of sockets, the downside of fixed plate is provided with a plurality of sleeves, the cover that all slides in the sleeve is equipped with the guide pillar, all be provided with the spring between guide pillar and the sleeve inner wall, the equal fixed connection in the upside of movable mould board in bottom of guide pillar, movable mould board's middle part is provided with the gas vent.

The die locking mechanism comprises a sliding cavity, a threaded rod, a handle, a locking rod, a circular cavity, a push plate and an elastic element, wherein the sliding cavity is symmetrically arranged on two sides of a die holder, the threaded rod is embedded on the side wall of the sliding cavity, the locking rod is embedded in the sliding cavity in a sliding mode, the circular cavity is formed in the locking rod, the handle is fixedly connected to the outer end of the threaded rod, the inner end of the threaded rod extends to the push plate fixedly connected with in the circular cavity, and the elastic element is arranged between the push plate and the inner wall of the circular cavity.

Specifically, the injection channel is connected between the charging barrel and the die cavity, a rectangular opening is formed in the upper side of the blocking cavity, a circular opening is formed in the lower side of the blocking cavity, and the cooling channel is of a spiral structure.

Specifically, the lower side of the movable template is provided with an upper die structure corresponding to the die cavity structure, and the fixed plate and the movable template are both connected with the guide pillar in a sliding manner.

Specifically, the side wall of the sliding cavity is provided with a screw hole structure corresponding to the threaded rod, and the lock rod is arranged corresponding to the insertion opening.

The invention has the beneficial effects that:

(1) according to the plastic secondary foaming forming machine, the movable template is in sliding connection with the fixed plate through the sleeve and the guide post, the spring is arranged in the sleeve, so that the integral upper template can be changed into a split structure, the rotating shaft and the helical blade are driven by the speed reducing motor to convey materials, the molten materials can enter the die cavity through the injection channel to be shaped and cooled, the movable template can be slowly pushed to move upwards by the foaming materials in the secondary foaming process, the space requirement of valve foaming plastics is met, the foaming materials are always attached to the inner wall of the die cavity, the shaping effect is good, and the foaming cavities and the surface wrinkles of the foaming plastics are effectively avoided.

(2) According to the plastic secondary foaming forming machine, the threaded rod rotates to control the push plate to move back and forth, so that the position of the lock rod can be effectively adjusted, when the threaded rod moves forward to push the push plate to press the elastic element, the lock rod is pressed against the outer wall of the movable template, the movable template moves up and down along with the movable template, and the automatic locking operation can be realized when the inserting opening and the lock rod are aligned.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of a plastic secondary foaming molding machine according to the present invention;

FIG. 2 is a schematic top view of a plastic secondary foaming machine according to the present invention;

FIG. 3 is an enlarged schematic view of the structure at the position A in FIG. 1 of the secondary plastic foaming machine according to the present invention;

FIG. 4 is an enlarged schematic view of a structure B in FIG. 1 of a secondary plastic foaming machine according to the present invention;

FIG. 5 is a top sectional view of a mold base of the plastic secondary foaming molding machine according to the present invention;

fig. 6 is a schematic structural view of a cooling channel in the plastic secondary foaming molding machine provided by the invention.

In the figure: 1. a base plate; 2. a material conveying mechanism; 21. a charging barrel; 22. a supporting seat; 23. an electrical heating plate; 24. a rotating shaft; 25. a helical blade; 26. a reduction motor; 27. a feed inlet; 3. a bottom die structure; 31. a die holder; 32. a cooling channel; 33. a mold cavity; 34. plugging the cavity; 35. plugging the ball; 36. an injection channel; 37. a drain pipe; 38. a flow guide pipe; 4. a mold clamping mechanism; 41. a top plate; 42. a traveler; 43. a fixing plate; 44. a hydraulic lever; 45. a sleeve; 46. a spring; 47. an exhaust port; 48. a guide post; 49. a movable template; 410. a socket; 5. a mold locking mechanism; 51. a slide chamber; 52. a threaded rod; 53. a handle; 54. a lock lever; 55. a circular cavity; 56. pushing the plate; 57. an elastic element.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-6, the plastic secondary foaming molding machine according to the present invention comprises a bottom plate 1, a material conveying mechanism 2, a bottom mold structure 3, a mold clamping mechanism 4 and a mold locking mechanism 5, wherein the bottom mold structure 3 is installed on the upper side of the bottom plate 1, the material conveying mechanism 2 is installed on the bottom side of the bottom mold structure 3, the mold clamping mechanism 4 is installed on the upper side of the bottom mold structure 3, the mold locking mechanism 5 is installed on the bottom mold structure 3, the material conveying mechanism 2 comprises a material cylinder 21, a support seat 22, an electric heating plate 23, a rotating shaft 24, a helical blade 25, a speed reduction motor 26 and a material inlet 27, the material cylinder 21 is fixed on the upper side of the bottom plate 1 through the support seat 22, the inner wall of the material cylinder 21 is fixedly embedded with a plurality of electric heating plates 23, the speed reduction motor 26 is screwed on one side end face of the material cylinder 21, the material inlet, the output shaft of gear motor 26 passes feed cylinder 21 fixedly connected with pivot 24, 24 outer wall fixedly connected with helical blade 25 of pivot, helical blade 25's anterior segment is arranged comparatively sparsely, and helical blade 25 back end is arranged comparatively closely, and this makes defeated material mechanism 2 can eat the material fast and ejection of compact fast, has improved work efficiency.

Specifically, the bottom die structure 3 includes a die holder 31, a cooling channel 32, a die cavity 33, a blocking cavity 34, a blocking ball 35, an injection channel 36, a drainage tube 37 and a drainage tube 38, the die cavity 33 is disposed in the middle of the upper side of the die holder 31, the injection channel 36 penetrates through the middle of the bottom side of the die cavity 33, the blocking cavity 34 is disposed in the middle of the injection channel 36, the blocking ball 35 is disposed in the blocking cavity 34, the cooling channel 32 is disposed in the die holder 31, the drainage tube 38 is communicated with the outermost side of the cooling channel 32, the drainage tube 37 is communicated with the innermost side of the cooling channel 32, a rectangular opening is disposed on the upper side of the blocking cavity 34, a circular opening is disposed on the lower side of the blocking cavity 34, the blocking ball 35 moves upward during injection, raw materials are circulated through gaps between the rectangular opening and the blocking ball 35, and the blocking ball 35 is blocked at the circular opening.

Specifically, the mold clamping mechanism 4 includes a top plate 41, sliding columns 42, a fixed plate 43, hydraulic rods 44, sleeves 45, springs 46, exhaust ports 47, guide columns 48, movable mold plates 49 and sockets 410, the top plate 41 is located above the mold base 31, four sliding columns 42 are fixedly connected between the top plate 41 and the mold base 31, the hydraulic rods 44 are fixed to the middle of the upper side of the top plate 41 through screws, the output ends of the hydraulic rods 44 penetrate through the top plate 41 and are fixedly connected with the fixed plate 43, the movable mold plates 49 are arranged below the fixed plate 43, a plurality of sockets 410 are symmetrically arranged on two sides of each movable mold plate 49, a plurality of sleeves 45 are arranged on the lower side of the fixed plate 43, the guide columns 48 are all slidably sleeved in the sleeves 45, the springs 46 are arranged between the inner walls of the guide columns 48 and the sleeves 45, the bottom ends of the guide columns 48 are all fixedly connected to the upper sides of the, the gas vent 47 is arranged to facilitate the discharge of gas in the molding space, thereby preventing the occurrence of the condition of the surface cavity of the foaming material.

Specifically, clamping mechanism 5 includes sliding cavity 51, threaded rod 52, handle 53, locking lever 54, round cavity 55, push pedal 56 and elastic element 57, sliding cavity 51 symmetry is seted up in the both sides of die holder 31, all inlay on sliding cavity 51's the lateral wall and be equipped with threaded rod 52, all slide in sliding cavity 51 and inlay and be equipped with locking lever 54, round cavity 55 has all been seted up in locking lever 54, the equal fixedly connected with handle 53 in the outer end of threaded rod 52, threaded rod 52's the inner fixedly connected with push pedal 56 in the round cavity 55 that all extends, all be provided with elastic element 57 between push pedal 56 and the round cavity 55 inner wall.

Specifically, the injection channel 36 is connected between the charging barrel 21 and the die cavity 33, a rectangular opening is arranged on the upper side of the blocking cavity 34, a circular opening is arranged on the lower side of the blocking cavity 34, and the cooling channel 32 is of a spiral structure, so that cold water can completely absorb heat of the die holder 31, and a rapid cooling effect is achieved.

Specifically, the lower side of the movable die plate 49 is provided with an upper die structure corresponding to the die cavity 33, the fixed plate 43 and the movable die plate 49 are both connected with the guide posts 48 in a sliding manner, the four corners of the fixed plate 43 and the movable die plate 49 are provided with sliding grooves, and the guide posts 48 are respectively arranged corresponding to the sliding grooves, so that the condition of die closing displacement can be prevented.

Specifically, the side wall of the sliding cavity 51 is provided with a screw hole structure corresponding to the threaded rod 52, the threaded rod 52 can be driven to move back and forth by the threaded structure in a self-rotating mode, the locking rod 54 is arranged corresponding to the inserting holes 410, the inserting holes 410 are vertically arranged on the movable template 49, and the shaping space can be effectively adjusted by inserting the locking rod 54 into different inserting holes 410.

The working principle is that the electric heating plate 23 is electrified to generate heat, a high-temperature environment can be formed in the charging barrel 21, after the mixed raw material of plastic particles and foaming agent is added into the charging barrel 21 through the charging opening 27, the speed reducing motor 26 is started, the spiral blade 25 can be driven to extrude and transmit the plastic particles, and the plastic particles can be heated and melted in the process, then the melted plastic material jacks the blocking ball 35 in the blocking cavity 34, the melted plastic enters the mold cavity 33, meanwhile, the starting cylinder 44 extends, the fixing plate 43 and the movable mold plate 49 can be pushed to move downwards to block the mold cavity 33, a shaping space is formed, after the movable mold plate 49 is inserted into the movable mold plate 49, a worker manually screws the handle 53, so that the threaded rod 52 pushes the push plate 56 forwards in a spiral manner, the locking rod 54 can move forwards to press the side wall of the movable mold plate 49, the cylinder 44 continues to be controlled to extend until the uppermost socket 410 is opposite to, under the action of the elastic force of the elastic element 57, the locking rod 54 is inserted into the insertion opening 410 and locked, at the moment, the volume of the molding space is minimum, the molten material can completely fill the molding space, in the secondary foaming process, a worker reversely rotates the handle 53, so that the threaded rod 52 is spirally moved backwards, the locking rod 54 is pulled out from the insertion opening 410, under the action of the elastic force of the spring 46, the movable template 49 is tightly attached to the foaming material and gradually moved upwards along with the expansion of the foaming material until the locking rod 54 is opposite to the next insertion opening 410, and the locking rod 54 is inserted into the insertion opening 410, so that the shape of secondary foaming molding is effectively limited.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a plastics secondary foaming make-up machine, includes bottom plate (1), defeated material mechanism (2), die block structure (3), locking mechanism (4) and clamping mechanism (5), its characterized in that, die block structure (3) are installed to the upside of bottom plate (1), defeated material mechanism (2) are installed to the bottom side of die block structure (3), the upside of die block structure (3) is provided with locking mechanism (4), locking mechanism (5) are installed on die block structure (3).

2. The plastic secondary foaming molding machine of claim 1, wherein: defeated material mechanism (2) are including feed cylinder (21), supporting seat (22), electric heating board (23), pivot (24), helical blade (25), gear motor (26), charge door (27), the upside at bottom plate (1) is fixed through supporting seat (22) in feed cylinder (21), feed cylinder (21) inner wall is fixed to inlay and is equipped with a plurality of electric heating boards (23), gear motor (26) screw fixation is on a side end face of feed cylinder (21), fixed the inlaying of charge door (27) is established the one end upside that is close gear motor (26) in feed cylinder (21), the output shaft of gear motor (26) passes feed cylinder (21) fixedly connected with pivot (24), pivot (24) outer wall fixedly connected with helical blade (25).

3. The plastic secondary foaming molding machine of claim 1, wherein: die block structure (3) are including die holder (31), cooling channel (32), die cavity (33), shutoff chamber (34), shutoff ball (35), injection passage (36), drainage pipe (37) and honeycomb duct (38), the upside middle part of die holder (31) is provided with die cavity (33), injection passage (36) have been run through in die cavity (33) bottom side middle part, shutoff chamber (34) have been seted up at the middle part of injection passage (36), be provided with shutoff ball (35) in shutoff chamber (34), cooling channel (32) set up in die holder (31), cooling channel (32) outside intercommunication has honeycomb duct (38), the most inboard intercommunication of cooling channel (32) has drainage pipe (37).

4. The plastic secondary foaming molding machine of claim 1, wherein: the die clamping mechanism (4) comprises a top plate (41), sliding columns (42), a fixed plate (43), a hydraulic rod (44), a sleeve (45), a spring (46), an exhaust port (47), a guide pillar (48), a movable template (49) and sockets (410), wherein the top plate (41) is positioned above the die holder (31), four sliding columns (42) are fixedly connected between the top plate (41) and the die holder (31), the hydraulic rod (44) is fixed on the middle of the upper side of the top plate (41) through screws, the output end of the hydraulic rod (44) penetrates through the top plate (41) and is fixedly connected with the fixed plate (43), the movable template (49) is arranged below the fixed plate (43), a plurality of sockets (410) are symmetrically arranged on two sides of the movable template (49), a plurality of sleeves (45) are arranged on the lower side of the fixed plate (43), and the guide pillars (48) are sleeved in the, springs (46) are arranged between the guide columns (48) and the inner wall of the sleeve (45), the bottom ends of the guide columns (48) are fixedly connected to the upper side of the movable die plate (49), and an exhaust port (47) is arranged in the middle of the movable die plate (49).

5. The plastic secondary foaming molding machine of claim 1, wherein: mould locking mechanism (5) are including sliding chamber (51), threaded rod (52), handle (53), locking lever (54), round chamber (55), push pedal (56) and elastic element (57), sliding chamber (51) symmetry is seted up in the both sides of die holder (31), all inlay on the lateral wall of sliding chamber (51) and be equipped with threaded rod (52), it inlays and is equipped with locking lever (54) all to slide in sliding chamber (51), round chamber (55) have all been seted up in locking lever (54), the equal fixedly connected with handle (53) in outer end of threaded rod (52), the inner of threaded rod (52) all extends to round chamber (55) internal fixedly connected with push pedal (56), all be provided with elastic element (57) between push pedal (56) and round chamber (55) inner wall.

6. A plastic secondary foaming molding machine as claimed in claim 3, characterized in that: the injection channel (36) is connected between the charging barrel (21) and the die cavity (33), a rectangular opening is formed in the upper side of the blocking cavity (34), a circular opening is formed in the lower side of the blocking cavity (34), and the cooling channel (32) is of a spiral structure.

7. A plastic secondary foaming molding machine as claimed in claim 3, characterized in that: the lower side of the movable template (49) is provided with an upper die structure corresponding to the die cavity (33), and the fixed plate (43) and the movable template (49) are both connected with the guide post (48) in a sliding manner.

8. A plastic secondary foaming molding machine as claimed in claim 5, characterized in that: the side wall of the sliding cavity (51) is provided with a screw hole structure corresponding to the threaded rod (52), and the lock rod (54) is arranged corresponding to the insertion opening (410).