CN111204032A

CN111204032A - Waste removing mechanism of blow molding die

Info

Publication number: CN111204032A
Application number: CN201811394377.4A
Authority: CN
Inventors: 谭汉林; 李有球
Original assignee: Dongguan Xindi Machinery Tool Co ltd
Current assignee: Dongguan Xindi Machinery Tool Co ltd
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-05-29
Anticipated expiration: 2038-11-21
Also published as: CN111204032B

Abstract

The invention relates to the technical field of molds, in particular to a waste removing mechanism of a blow mold, which has the technical scheme that: the cutting device is arranged on the frame plate positioned on the upper side of the blow molding die, the upper ends of the blow molding die are covered with jacking dies forming a closed cavity, and the blow molding die is provided with a jacking device for jacking the jacking dies to form a cutter insertion hole; the cutting knife inserting port is used for cutting the cutting device in the inserting cavity; and a tail pulling device for pulling down to remove the tail is arranged at the bottom of the blow molding die. The waste removing mechanism of the blow molding die has the advantage of improving the production efficiency of the box body.

Description

Waste removing mechanism of blow molding die

Technical Field

The invention relates to the technical field of molds, in particular to a waste removing mechanism of a blow mold.

Background

The blow molding machine extrudes a liquid plastic pipe blank through an extruder, hangs the liquid plastic pipe blank in a pre-closed mold cavity arranged right below a machine head, immediately closes an upper seal and a lower seal after a drooping parison reaches a specified length, leads compressed air into a small hole of the upper seal to ensure that the parison is blown to be tightly attached to a mold wall for forming, maintains the pressure, opens the mold after a product is cooled and shaped in the mold cavity and takes out the product.

When the mold of the blow molding machine is used for producing the box body with one open end, the opening needs to be cut manually, the tail of the box body is provided with the tailings, and the tailings also need to be removed manually, so that the time and the labor are wasted, and the production efficiency is lower.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a waste removing mechanism of a blow mold, which has the advantage of improving the production efficiency of a box body.

The technical purpose of the invention is realized by the following technical scheme: a waste removing mechanism of a blow mold comprises a frame plate used for mounting the blow mold, wherein a cutting device is arranged on the frame plate positioned on the upper side of the blow mold, top molds forming a closed cavity are covered at the upper ends of the blow mold, and a jacking device for jacking the top molds to form a cutter insertion hole is arranged on the blow mold; the cutting knife inserting port is used for cutting the cutting device in the inserting cavity; and a tail pulling device for pulling down to remove the tail is arranged at the bottom of the blow molding die.

Through adopting above-mentioned technical scheme, close through the top die cover and form closed chamber shaping box body on blow molding die, the box body takes shape the back, pushes up the mould through the jacking system and forms the cutter inserted hole, cuts the box body in the cutters inserts the chamber, and the tail that draws the tail device to pull away the box body bottom that is located the mould bottom compares the manual work and gets rid of box body bottom tail and manual work to the box body opening, very big improvement the production efficiency of box body.

The invention is further configured to: the frame plate comprises a front frame plate and a rear frame plate which are arranged oppositely, the blow molding die comprises a front die and a rear die, the front die and the rear die are respectively installed on the front frame plate and the rear frame plate, the two jacking dies are respectively covered on the front die and the rear die, the two jacking devices are arranged, and the two jacking devices respectively push the two jacking dies to move upwards.

By adopting the technical scheme, the blank extruded by the extruder is positioned between the front die and the rear die, and when the front die and the rear die are closed, the blank is positioned in the cavity, so that the blank can conveniently enter the cavity.

The invention is further configured to: the cutting device comprises a cutting cylinder, a cylinder supporting plate, an installation block and a cutter, wherein the cylinder supporting plate is installed on the upper side of the frame plate, the cutting cylinder is installed on the cylinder supporting plate, a telescopic shaft of the cutting cylinder is connected with the installation block, the cutter is installed on the side wall, away from one side of the cutting cylinder, of the installation block, and the cutter corresponds to the position of a cutter insertion hole.

Through adopting above-mentioned technical scheme, drive the cutter through installing the cutting cylinder on the cylinder layer board and insert the cutter inserted hole to carry out the opening cutting to the box body, thereby accomplish mouth of a river material and box body open-ended work simultaneously, thereby improved the production efficiency of box body.

The invention is further configured to: the utility model discloses a blow molding machine, including frame plate, cutter layer board, cutter inserted hole, blow molding die, cutter layer board, be provided with the cutter layer board on the frame plate, the cutter layer board all is provided with the guide block along cutter cutting direction both sides, the cutter is located between two guide blocks, just the guide block extends to the blow molding die through the cutter inserted hole in, just the transversal shape of personally submitting of guide block is fallen L.

Through adopting above-mentioned technical scheme, two guide blocks of cutter both sides extend to the blow mold in, through the spacing of two guide blocks to make the accurate cutting to the box body of cutter, thereby improve the quality of box body cutting.

The invention is further configured to: the jacking device comprises a jacking cylinder, a push rod, a push plate and a connecting block, wherein the push rod and the connecting block are arranged in two, two push rods are arranged on two sides of the blow molding die, the connecting block is connected to two sides of the jacking die respectively, the push plate is transversely arranged below the blow molding die, the two ends of the push rod are connected to two connecting blocks respectively, the lower ends of the push rods are connected to two sides of the push plate, and the jacking cylinder pushes the push plate to move towards the direction close to the blow molding die.

Through adopting above-mentioned technical scheme, promote the push pedal through the jack-up cylinder and shift up to two push rods that connect on the drive push pedal shift up, and then promote the connecting block of push rod upper end and shift up, shift up through connecting block drive top mould, thereby open the cutter inserted hole.

The invention is further configured to: the anti-explosion device is characterized in that the anti-explosion device used for preventing the box body from bursting is arranged on the jacking device and comprises an anti-explosion fixing plate, a connecting plate and a limiting assembly, the anti-explosion fixing plate is installed on the frame plate, the lower surface of the connecting plate is provided with the push plate, the limiting assembly is arranged between the jacking cylinder and the connecting plate, and the jacking cylinder is a double-acting cylinder.

By adopting the technical scheme, under the action of the double-acting air cylinder, the push rod enables the top die to be firmly and hermetically covered on the blow molding die, and the blank is prevented from being leaked and broken in the blow molding process in the cavity. Through the spacing subassembly that sets up between jacking cylinder and connecting plate, make the jacking cylinder promote the lid that can be accurate after the top mould jack-up and close in the blow molding mould upper end, prevent the top mould off normal to carry out accurate location to the top mould stroke through spacing subassembly, thereby prevent that the top mould jack-up is excessive, thereby make box body deformation, consequently improved the quality that the box body takes shape through the explosion-proof equipment who sets up.

The invention is further configured to: spacing subassembly includes cooperation piece, guide block, upper limit piece and lower limit piece, the cooperation piece is installed at the connecting plate lower surface, upper limit piece and lower limit piece are installed on explosion-proof fixed plate at the upper and lower interval, the hole of stepping down that supplies cooperation piece activity to peg graft is seted up to the upper limit piece, the cooperation piece has seted up the stroke hole to jacking cylinder promotion direction, lower limit piece slides and connects in the stroke hole, is located the stroke hole position cooperation piece both sides all are provided with the limit piece, distance between limit piece and the connecting plate equals with the length in stroke hole, upper limit piece and lower limit piece are along cooperation piece length direction's highly equal, the cooperation piece is kept away from connecting plate one end and is connected with jacking cylinder, the guide block is installed on explosion-proof fixed plate, the guide hole of pegging graft with cooperation piece and limit piece activity is seted up to the guide block.

Through adopting above-mentioned technical scheme, the cooperation piece activity is pegged graft in the hole of stepping down, when jacking cylinder promoted the cooperation piece and reciprocates, lower limit block slided in the stroke hole, and upper limit block is located and removes between limit piece and the connecting plate, carry out double spacing through upper limit block and lower limit block to the stroke of cooperation piece, thereby improved the injecing of promoting the top mould position from top to bottom, thereby improved the precision of top mould stroke, thereby avoid top mould off normal or jack-up excessive, thereby improve the quality that the box body takes shape.

The invention is further configured to: the limiting assembly comprises two sliding blocks, two cylinder push blocks and two movable handles, the side wall of the explosion-proof fixed plate is provided with a push groove and two guide grooves towards the pushing direction of the jacking cylinder, the two guide grooves are positioned at two sides of the push groove, the two sliding blocks are respectively connected in the two guide grooves in a sliding manner, the cylinder push block is connected in the push groove in a sliding manner, the explosion-proof fixed plate positioned between the guide grooves and the push groove is provided with a swing limiting groove for the movable handle to move, a rotating rod is rotatably connected at the notch of the swing limiting groove close to the sliding blocks, the movable handles are fixedly connected on the rotating rod, the two sliding blocks are respectively provided with movable grooves relative to the side wall of the cylinder push block and the side walls at two sides of the cylinder push block, and two ends of the movable handles are respectively positioned in the movable grooves of the sliding blocks and the cylinder push block, the telescopic shaft of the jacking cylinder is connected with the lower side of the cylinder push block, the upper side of the sliding block is connected with the lower surface of the connecting plate, the surface of the explosion-proof fixing plate is provided with an cover plate, and the cover plate covers the guide groove.

Through adopting above-mentioned technical scheme, the jacking cylinder promotes the cylinder ejector pad and reciprocates along promoting the groove, thereby it rotates along the dwang to drive the activity handle through the cylinder ejector pad, thereby make activity handle promote the sliding block and reciprocate along the guide way, thereby it reciprocates to drive the connecting plate, and then final drive ejector die reciprocates, through setting up the swing spacing groove on explosion-proof fixed plate, it is spacing to the rotation of activity handle, thereby the precision of ejector die stroke has been improved, thereby avoid ejector die off normal or jack-up excessive, thereby improve the quality that the box body takes shape.

The invention is further configured to: the tail pulling device is fixed at the bottom of a blow molding die and comprises a pulling block, a clamping block, a fixed supporting plate and a tail pulling cylinder, corresponding notch grooves are formed in the bottoms of a front die and a rear die upwards, the notch grooves are located below a cavity, the pulling block is movably inserted into the notch grooves of the rear die, the clamping block is fixedly installed in the notch grooves of the front die, the fixed supporting plate is fixedly installed at the bottom of the rear die, the tail pulling cylinder is installed on the fixed supporting plate, and a telescopic shaft of the tail pulling cylinder is connected with the bottom of the pulling block.

By adopting the technical scheme, the blank extruded by the extruder is positioned between the front die and the rear die, the blank is positioned in the cavity after the front die and the rear die are closed, the lower end of the blank is clamped between the pulling block and the clamping block, and the pulling block is pulled to move downwards by pulling the tail gas cylinder, so that the tail material is pulled out.

The invention is further configured to: the lateral wall level of the relative clamp splice of piece that draws is provided with the sand grip, the sand grip sets up a plurality ofly along vertical direction interval.

Through adopting above-mentioned technical scheme, through setting up the sand grip on drawing a lateral wall, make the stable centre gripping of tails draw between piece and splint to through the sand grip, increase the frictional force who draws piece and tails, thereby improve and draw the piece to pull the effect of removing the tails.

In conclusion, the invention has the following beneficial effects:

firstly, a closed cavity forming box body is formed on a blow molding die through a top die cover, after the box body is formed, a cutter inserting opening is formed by pushing the top die upwards through a jacking device, the cutter device is inserted into the cavity to cut the box body, and a tail pulling device positioned at the bottom of the die pulls off tails at the bottom of the box body;

secondly, under the action of the double-acting air cylinder, the push rod enables the top die to be firmly and hermetically covered on the blow molding die, and the blank is prevented from being leaked and broken in the blow molding process in the cavity. The limit assembly arranged between the jacking cylinder and the connecting plate enables the jacking cylinder to push the jacking die to jack up and then to accurately cover the upper end of the blow molding die, so that the jacking die is prevented from deviating, and the stroke of the jacking die is accurately positioned through the limit assembly, so that the jacking die is prevented from being excessively jacked, and the box body is prevented from deforming, and the forming quality of the box body is improved through the arranged explosion-proof device;

its third, through setting up the sand grip on pulling a lateral wall, make the stable centre gripping of tails between pulling a piece and splint to through the sand grip, increase the frictional force who draws a piece and tails, thereby improve and draw the piece to pull the effect of removing the tails.

Drawings

FIG. 1 is a schematic overall structure diagram of the first embodiment;

FIG. 2 is a schematic structural view showing a state where a front mold and a rear mold are separated in the first embodiment;

FIG. 3 is a schematic view of a cutting device and a cutter according to an embodiment;

FIG. 4 is a schematic view of a part of the structure of a jacking device in accordance with one embodiment;

FIG. 5 is a schematic view showing the installation structure of the explosion-proof apparatus and the jack-up cylinder in the first embodiment;

FIG. 6 is a schematic view of an installation structure of a position limiting assembly according to an embodiment;

FIG. 7 is a schematic view of an installation structure of a blow mold and a tail pulling device according to an embodiment;

FIG. 8 is a schematic structural view of a tail pulling device according to an embodiment;

FIG. 9 is a schematic view showing the mounting structure of the explosion-proof apparatus and the jack-up cylinder in the second embodiment;

fig. 10 is a schematic view of an installation structure of the limiting assembly in the second embodiment.

In the figure: 11. a front frame plate; 12. a rear frame plate; 13. a front mold; 14. a rear mold; 15. carrying out top die; 16. a shaped cavity; 17. positioning a groove; 21. cutting the air cylinder; 22. a cylinder support plate; 221. a fixed block; 222. a guide bar; 23. mounting blocks; 24. a cutter; 241. a blade; 25. a cutter supporting plate; 251. positioning pins; 26. a guide block; 27. a blade stopper; 31. jacking up the cylinder; 32. a push rod; 321. a card slot; 33. pushing the plate; 331. caulking grooves; 34. connecting blocks; 35. a pull rod; 351. an adjustment section; 352. a connecting portion; 36. positioning blocks; 37. a stroke block; 38. an explosion-proof fixing plate; 381. a push groove; 382. a guide groove; 383. a swing limiting groove; 39. a connecting plate; 41. a matching block; 411. a travel hole; 412. an edge block; 42. a guide block; 421. a guide hole; 43. an upper limit block; 431. a hole of abdication; 44. a lower limiting block; 45. a T-shaped plate; 51. a slider; 52. a cylinder push block; 53. a movable handle; 54. rotating the rod; 55. a movable groove; 56. a cover plate; 61. pulling the block; 611. a T-shaped fixture block; 62. a clamping block; 63. fixing the supporting plate; 64. a tail pulling cylinder; 641. a retaining ring; 65. a notch groove; 66. a convex strip; 67. a tail plate is pulled; 671. a T-shaped clamping groove; 672. buckling grooves; 68. and aligning the blocks.

Detailed Description

The invention is described in detail below with reference to the figures and examples.

The first embodiment is as follows: a waste removing mechanism of a blow mold is shown in figures 1 and 2 and comprises a frame plate for mounting the blow mold, wherein a cutting device is arranged on the frame plate positioned on the upper side of the blow mold, a top mold 15 forming a closed cavity 16 is covered at the upper end of the blow mold, a jacking device for jacking the top mold 15 to form a cutter inserting opening is arranged on the blow mold, and the cutter inserting opening is used for the cutting device to be inserted into the cavity 16 to cut a box body; and a tail pulling device for pulling down to remove the tail is arranged at the bottom of the blow molding die. Close through top mould 15 lid and form the 16 shaping box bodies in closed chamber on blow molding die, the box body takes shape the back, pushes up top mould 15 through jacking system and forms the cutter inserted hole, cuts the box body in cutting device inserted chamber 16, and the tail that draws the tail device to pull away the box body bottom that is located the blow molding die bottom compares the manual work and gets rid of box body bottom tail and manual work to the box body opening, very big improvement the production efficiency of box body.

Specifically, as shown in fig. 1 and 2, the frame plate includes a front frame plate 11 and a rear frame plate 12 which are oppositely arranged, the blow mold includes a front mold 13 and a rear mold 14 which can be opened and closed, the front mold 13 and the rear mold 14 are respectively mounted on the front frame plate 11 and the rear frame plate 12, two top molds 15 are provided, the two top molds 15 respectively cover the front mold 13 and the rear mold 14, two jacking devices are provided, and the two jacking devices respectively push the two top molds 15 to move upwards. The blank extruded by the extruder is located between the front die 13 and the rear die 14, and when the front die 13 and the rear die 14 are closed, the blank is located in the cavity 16, thereby facilitating the blank to enter the cavity 16.

Specifically, as shown in fig. 2 and 3, the cutting device includes a cutting cylinder 21, a cylinder support plate 22, an installation block 23, and a cutter 24, the cylinder support plate 22 is installed on the upper side of the frame plate, the cutting cylinder 21 is installed on the cylinder support plate 22, a telescopic shaft of the cutting cylinder 21 is connected with the installation block 23, the cutter 24 is installed on a side wall of the installation block 23 far away from the cutting cylinder 21, and the cutter 24 corresponds to a position of a cutter insertion opening. The cylinder supporting plates 22 positioned on two sides of the telescopic shaft of the cutting cylinder 21 are respectively provided with a fixed block 221, and the two fixed blocks 221 are respectively provided with a guide rod 222 movably inserted on the mounting block 23. Be provided with two chambeies 16 in the blow mold, be provided with two edges 241 that lean out on the cutter 24, can cut the box body in two chambeies 16 simultaneously to the edge 241 that the slope set up, when the cutting, begins the cutting from the box body edge, thereby can reduce the pressure loss to the box body.

Further, as shown in fig. 2 and 3, a cutter supporting plate 25 is arranged on the frame plate, guide blocks 26 are arranged on both sides of the cutter supporting plate 25 along the cutting direction of the cutter 24, the cutter 24 is located between the two guide blocks 26, the guide blocks 26 extend into the blow mold through a cutter insertion opening, and the cross section of each guide block 26 is in an inverted L shape. Two guide blocks 26 of cutter 24 both sides extend to the blow mold in, spacing through two guide blocks 26 to make the accurate box body of cutting of cutter 24, thereby improve the quality of box body cutting. The cutting device of this embodiment is mounted on the front frame plate 11, but in other embodiments the cutting device may also be mounted on the rear frame plate 12. The upper surface between two guide blocks 26 transversely is provided with blade stopper 27, and blade stopper 27 sets up with installation piece 23 relatively, when cutting cylinder 21 promoted cutter 24 cutting box body, contradicts on blade stopper 27 through installation piece 23 to it is spacing to cutter 24. Two positioning pins 251 inserted on the side wall of the front die 13 are arranged on the cutter supporting plate 25 at intervals.

As shown in fig. 2 and 4, the jacking device includes a jacking cylinder 31, push rods 32, a push plate 33 and connecting blocks 34, the push rods 32 and the connecting blocks 34 are all provided in two numbers, two push rods 32 are arranged on two sides of the blow mold, two connecting blocks 34 are respectively connected on two sides of the top mold 15, the push plate 33 is transversely arranged below the blow mold, the upper ends of the two push rods 32 are respectively connected on the two connecting blocks 34, the lower ends of the two push rods 32 are connected on two sides of the push plate 33, and the jacking cylinder 31 pushes the push plate 33 to move towards the direction close to the blow mold. The pushing plate 33 is pushed to move upwards by the jacking air cylinder 31, so that two push rods 32 connected to the pushing plate 33 are driven to move upwards, a connecting block 34 at the upper end of each push rod 32 is further driven to move upwards, the top die 15 is driven to move upwards by the connecting block 34, and a cutter inserting opening is opened.

As shown in fig. 4, one end of the push rod 32, which is far away from the connecting block 34, is connected with the pull rod 35 in a threaded manner, the pull rod 35 includes an adjusting portion 351 and a connecting portion 352, one end of the adjusting portion 351 is connected with the push rod 32 in a threaded manner, the other end of the adjusting portion is fixedly connected with the connecting portion 352, the other end of the connecting portion 352 is connected with the push plate 33, the side wall of the push plate 33 and the side wall of the connecting block 34 are correspondingly provided with an upper caulking groove 331 and a lower caulking groove 331 which are communicated with each other, the side walls at the two ends of the push rod 32 and the pull rod 35 are provided with clamping grooves 321 which are matched with the caulking grooves 331, so that the upper and lower groove walls of the clamping grooves 321 are abutted to the. The side walls of the two sides of the blow molding mould are respectively provided with a positioning block 36, and the two push rods 32 are respectively movably inserted into the two positioning blocks 36. The push rod 32 is movably inserted into the positioning block 36, so that the connection stability of the push rod 32 and the connecting block 34 and the connection stability of the pull rod 35 and the push plate 33 are improved. The lower surface of the connecting block 34 is provided with an L-shaped stroke block 37, the side wall of the blow mold is vertically provided with a positioning groove 17 for the sliding connection of the stroke block 37, and a collision part (not shown in the figure) colliding with the stroke block 37 is arranged in the positioning groove 17 to limit the upward moving height of the stroke block 37.

Further, as shown in fig. 2 and 5, an explosion-proof device for preventing the blow-molded box body from bursting is arranged on the jacking device, the explosion-proof device comprises an explosion-proof fixing plate 38, a connecting plate 39 and a limiting assembly, the explosion-proof fixing plate 38 is mounted on the frame plate, and the connecting plate 39 is fixedly mounted on the lower surface of the push plate 33, specifically, fixed by clamping. The limiting assembly is arranged between the jacking air cylinder 31 and the connecting plate 39, and the jacking air cylinder 31 is a double-acting air cylinder. Under the action of the double-acting cylinder, the push rod 32 can firmly and tightly cover the top die 15 on the blow molding die, so as to prevent the blank from leaking and cracking in the process of blow molding in the cavity 16. Through the spacing subassembly that sets up between jacking cylinder 31 and connecting plate 39, make jacking cylinder 31 promote the lid that can be accurate after the jacking of top mould 15 and close in the blow molding mould upper end, prevent top mould 15 off normal to carry out accurate location to top mould 15 stroke through spacing subassembly, thereby prevent the excessive jack-up of top mould 15, thereby make the box body deformation, consequently improved the quality that the box body takes shape through the explosion-proof equipment who sets up.

Specifically, as shown in fig. 5 and 6, the limiting component includes a matching block 41, a guide block 42, an upper limit block 43 and a lower limit block 44, the matching block 41 is installed on the lower surface of the connecting plate 39, the upper limit block 43 and the lower limit block 44 are installed on the explosion-proof fixing plate 38 at intervals up and down, the upper limit block 43 is provided with a yielding hole 431 for the matching block 41 to movably insert, the matching block 41 is provided with a stroke hole 411 in the pushing direction of the jacking cylinder 31, the lower limit block 44 is connected in the stroke hole 411 in a sliding manner, the two sides of the matching block 41 at the position of the stroke hole 411 are both provided with an edge block 412, the distance between the edge block 412 and the connecting plate 39 is equal to the length of the stroke hole 411, the heights of the upper limit block 43 and the lower limit block 44 along the length direction of the matching block 41 are equal, one end, far away from the connecting plate 39, of the matching block 41 is connected with the jacking cylinder 31 through a T-shaped plate 45, the guide block 42 is installed on the explosion-proof fixing plate 38, and the guide hole 421 movably inserted into the matching block 41 and the edge block 412 is formed in the guide block 42. Cooperation piece 41 activity is pegged graft in the hole 431 of stepping down, jack-up cylinder 31 promotes cooperation piece 41 when reciprocating, lower limit block 44 slides in stroke hole 411, and upper limit block 43 is located and moves between limit block 412 and the connecting plate 39, carry out double spacing through upper limit block 43 and lower limit block 44 to the stroke of cooperation piece 41, thereby improved the restriction that promotes top mould 15 upper and lower left and right sides position, thereby improved the precision of top mould 15 stroke, thereby avoid top mould 15 off normal or jack-up excessive, thereby improve the quality that the box body takes shape.

Specifically, as shown in fig. 2 and 7, the tail pulling device is fixed at the bottom of the blow molding die, the tail pulling device comprises a pulling block 61, a clamping block 62, a fixed supporting plate 63 and a tail pulling cylinder 64, corresponding notch grooves 65 are upwards formed in the bottoms of the front die 13 and the rear die 14, the notch grooves 65 are located below the cavity 16, the pulling block 61 is movably inserted into the notch grooves 65 of the rear die 14, the clamping block 62 is fixedly installed in the notch grooves 65 of the front die 13, the fixed supporting plate 63 is fixedly installed at the bottom of the rear die 14, the tail pulling cylinder 64 is installed on the fixed supporting plate 63, and a telescopic shaft of the tail pulling cylinder 64 is connected with the bottom of the pulling block 61. The blank extruded by the extruder is positioned between the front die 13 and the rear die 14, the blank is positioned in the cavity 16 after the front die 13 and the rear die 14 are closed, the lower end of the blank is clamped between the pulling block 61 and the clamping block 62, and the pulling block 61 is pulled to move downwards by pulling the tail gas cylinder 64, so that the tail gas is pulled and removed.

As shown in fig. 7 and 8, the pull block 61 is provided with a plurality of ribs 66 horizontally with respect to the side wall of the clamp block 62, and the plurality of ribs 66 are provided at intervals in the vertical direction. Through setting up the sand grip 66 on pulling the piece 61 lateral wall, make the stable centre gripping of tails between pulling piece 61 and splint to through sand grip 66, increase the frictional force who pulls piece 61 and tails, thereby improve and pull piece 61 and pull the effect of removing the tails. Further, the ribs 66 are triangular in cross-section. The protruding strips 66 arranged in a triangular shape can further improve the friction force between the pulling block 61 and the tailings, so that the tailings can be stably pulled down and removed.

Further, as shown in fig. 7 and 8, two notch grooves 65, two pulling blocks 61 and two clamping blocks 62 are provided, the two notch grooves 65 are respectively located below the two cavity chambers 16, the telescopic shaft of the tail pulling cylinder 64 is connected with a tail pulling plate 67, and two sides of the tail pulling plate 67 are simultaneously connected with the bottoms of the two pulling blocks 61. The tail pulling cylinder 64 can pull two pull blocks 61 to move downwards at the same time by pulling the tail pulling plate 67, so that tail pulling treatment can be performed on the bottoms of the blow molding pieces in the two cavity 16 at the same time, and the tail pulling efficiency of the blow molding pieces is improved.

As shown in fig. 8, a T-shaped block 611 is disposed at the bottom of the pulling block 61, a T-shaped engaging groove 671 adapted to the T-shaped block 611 is disposed on the side wall of the tail pulling plate 67, a fastening groove 672 is disposed on the lower surface of the tail pulling plate 67, and a fastening ring 641 fastened in the fastening groove 672 is fixedly disposed on the telescopic shaft of the tail pulling cylinder 64. Through the T-shaped fixture block 611 joint in T-shaped draw-in groove 671 of draw block 61 bottom to through the snap ring joint in catching groove 672 of setting on drawing tail cylinder 64 telescopic shaft, thereby make things convenient for the dismouting of draw block 61 and draw tail plate 67. The tail pulling plate 67 is provided with an alignment block 68 parallel to the pulling block 61, and the bottom of the rear mold 14 is provided with an alignment groove (not shown in the figure) for the alignment block 68 to be inserted. When the pull block 61 is inserted into the notch groove 65, the alignment block 68 is inserted into the alignment groove, and alignment positioning is performed through the alignment block 68, so that the pull block 61 is conveniently inserted into the notch groove 65. The side walls of the two sides of the upper end of the pulling block 61 are arranged inwards in an inclined mode. The side walls of the two sides of the pulling block 61 are obliquely arranged, so that the clamping block can be conveniently inserted into the notch groove 65.

The working process is as follows: when the box body in the blow molding mold is formed, the top mold 15 is pushed up through the jacking device, the top mold 15 and the blow molding mold are separated to open the cutter insertion hole, the cutting cylinder 21 in the cutting device pushes the cutter 24 to cut the opening of the box body in the cavity 16, and the jacking device is limited and jacked through the explosion-proof device arranged on the jacking device, so that the box body in the cavity 16 is prevented from being broken. And the tail device that draws that sets up in the blow mold bottom draws piece 61 under the effect of drawing tail cylinder 64, pull down to make the centre gripping draw the tails between piece 61 and the clamp splice 62 to tear apart, compare the manual work and get rid of box body bottom tails and the manual work is to the box body opening, very big improvement the production efficiency of box body.

Example two: as shown in fig. 9 and 10, a waste removing mechanism of a blow mold is different from the first embodiment in that a limiting component includes two sliding blocks 51, two cylinder pushing blocks 52 and two movable handles 53, two sliding blocks 51 and two movable handles 53 are provided, a pushing groove 381 and two guide grooves 382 are provided on the side wall of an explosion-proof fixing plate 38 towards the pushing direction of a jacking cylinder 31, two guide grooves 382 are provided, two guide grooves 382 are located on both sides of the pushing groove 381, two sliding blocks 51 are respectively connected in the two guide grooves 382 in a sliding manner, the cylinder pushing block 52 is connected in the pushing groove 381 in a sliding manner, a swing limiting groove 383 for moving the movable handle 53 is provided on the explosion-proof fixing plate 38 between the guide grooves 382 and the pushing groove 381, a rotating rod 54 is rotatably connected at a notch of the swing limiting groove 383 near the sliding rod 51, the movable handles 53 are fixedly connected on the rotating rod 54, two sliding blocks 51 are provided with movable grooves 55 on the side wall of the cylinder pushing block 52 and the, the two ends of the movable handle 53 are respectively positioned in the movable grooves 55 of the sliding block 51 and the cylinder push block 52, the two ends of the movable handle 53 are arranged in an arc shape, and the movable grooves 55 are provided with intervals for the two ends of the movable handle 53 to move. The telescopic shaft of the jacking cylinder 31 is connected with the lower side of the cylinder push block 52, the upper sides of the two sliding blocks 51 are connected with the lower surface of the connecting plate 39, the surface of the explosion-proof fixing plate 38 is provided with a cover plate 56, and the cover plate 56 covers the guide groove 382. The jacking cylinder 31 promotes the cylinder ejector pad 52 and reciprocates along pushing away groove 381, thereby drive movable handle 53 through cylinder ejector pad 52 and rotate along dwang 54, thereby make movable handle 53 promote sliding block 51 and reciprocate along guide way 382, thereby drive connecting plate 39 and reciprocate, and then final drive top mould 15 reciprocates, through setting up swing spacing groove 383 on explosion-proof fixed plate 38, it is spacing to the rotation of movable handle 53, thereby the precision of top mould 15 stroke has been improved, thereby avoid top mould 15 off normal or excessive jack-up, thereby improve the quality that the box body takes shape.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a waste material removal mechanism of blow mold which characterized in that: the cutting device is arranged on the frame plate positioned on the upper side of the blow molding die, the upper ends of the blow molding die are covered with top dies (15) forming a closed cavity (16), and the blow molding die is provided with a jacking device for jacking the top dies (15) to form a cutter insertion opening; the cutting knife inserting port is used for cutting the cutting device inserted into the cavity (16); and a tail pulling device for pulling down to remove the tail is arranged at the bottom of the blow molding die.

2. The scrap removal mechanism for a blow mold according to claim 1, wherein: frame plate is including relative preceding frame plate (11) and back frame plate (12) that set up, blow mold includes front mould (13) and back mould (14), front mould (13) and back mould (14) are installed respectively in the front on frame plate (11) and back frame plate (12), top mould (15) set up two, two top mould (15) are covered respectively and are closed on front mould (13) and back mould (14), jacking device sets up two, two jacking device promotes two top moulds (15) respectively and shifts up.

3. The scrap removal mechanism for a blow mold according to claim 2, wherein: the cutting device comprises a cutting cylinder (21), a cylinder supporting plate (22), an installation block (23) and a cutter (24), wherein the cylinder supporting plate (22) is installed on the upper side of the frame plate, the cutting cylinder (21) is installed on the cylinder supporting plate (22), a telescopic shaft of the cutting cylinder (21) is connected with the installation block (23), the cutter (24) is installed on the side wall, away from the cutting cylinder (21), of the installation block (23), and the cutter (24) corresponds to the position of a cutter insertion hole.

4. A blow mold scrap removal mechanism in accordance with claim 3, wherein: be provided with cutter layer board (25) on the frame board, cutter layer board (25) all are provided with guide block (26) along cutter (24) cutting direction both sides, cutter (24) are located between two guide block (26), just guide block (26) extend to the blow molding mould in through the cutter inserted hole, just the transversal L shape of personally submitting of guide block (26).

5. The scrap removal mechanism for a blow mold according to claim 2, wherein: the jacking device comprises a jacking cylinder (31), a push rod (32), a push plate (33) and connecting blocks (34), wherein the push rod (32) and the connecting blocks (34) are arranged two by two, the push rod (32) is arranged on two sides of the blow molding die, two are arranged on the two sides of the blow molding die respectively, the connecting blocks (34) are respectively connected on two sides of the jacking die (15), the push plate (33) is transversely arranged below the blow molding die and is connected with the upper end of the push rod (32) respectively on the two connecting blocks (34) and is connected with the lower end of the push rod (32) on two sides of the push plate (33), and the jacking cylinder (31) pushes the push plate (33) to move towards the.

6. The scrap removal mechanism for a blow mold according to claim 5, wherein: be provided with the explosion-proof equipment who is used for preventing the tensile burst of box body on the jacking system, explosion-proof equipment includes explosion-proof fixed plate (38), connecting plate (39) and spacing subassembly, install on the frame board explosion-proof fixed plate (38), connecting plate (39) installation push pedal (33) lower surface, spacing subassembly sets up between jacking cylinder (31) and connecting plate (39), jacking cylinder (31) are two effect cylinders.

7. The scrap removal mechanism for a blow mold according to claim 6, wherein: the limiting assembly comprises a matching block (41), a guide block (42), an upper limit block (43) and a lower limit block (44), the matching block (41) is installed on the lower surface of a connecting plate (39), the upper limit block (43) and the lower limit block (44) are installed on an explosion-proof fixing plate (38) at an upper and lower interval, the upper limit block (43) is provided with a yielding hole (431) for the matching block (41) to be movably inserted, the matching block (41) is provided with a stroke hole (411) in the pushing direction of a jacking cylinder (31), the lower limit block (44) is connected in the stroke hole (411) in a sliding manner, side blocks (412) are arranged on two sides of the matching block (41) at the position of the stroke hole (411), the distance between the side blocks (412) and the connecting plate (39) is equal to the length of the stroke hole (411), and the heights of the upper limit block (43) and the lower limit block (44) are equal to each other along the length direction of the matching block (, one end, far away from the connecting plate (39), of the matching block (41) is connected with the jacking cylinder (31), the guide block (42) is installed on the explosion-proof fixing plate (38), and the guide block (42) is provided with a guide hole (421) movably connected with the matching block (41) and the side block (412) in an inserting mode.

8. The scrap removal mechanism for a blow mold according to claim 6, wherein: the limiting assembly comprises a sliding block (51), a cylinder push block (52) and a movable handle (53), the sliding block (51) and the movable handle (53) are both provided with two, the side wall of the explosion-proof fixing plate (38) is provided with a push groove (381) and a guide groove (382) towards the pushing direction of the jacking cylinder (31), the guide groove (382) is provided with two guide grooves (382) which are positioned at two sides of the push groove (381), the sliding block (51) is respectively connected in the two guide grooves (382) in a sliding manner, the cylinder push block (52) is connected in the push groove (381) in a sliding manner, a swing limiting groove (383) for the movable handle (53) to move is arranged on the explosion-proof fixing plate (38) between the guide groove (382) and the push groove (381), the notch of the swing limiting groove (383) close to the sliding block (51) is rotatably connected with a rotating rod (54), activity handle (53) fixed connection is on dwang (54), two activity groove (55) have all been seted up to the lateral wall of the relative cylinder ejector pad (52) of sliding block (51) and the both sides lateral wall of cylinder ejector pad (52), activity handle (53) both ends are located respectively in activity groove (55) of sliding block (51) and cylinder ejector pad (52), the telescopic shaft of jack-up cylinder (31) is connected, two sliding block (51) upside and connecting plate (39) lower surface are connected, explosion-proof fixed plate (38) surface is provided with apron (56), apron (56) lid closes in guide way (382) top.

9. The scrap removal mechanism for a blow mold according to claim 2, wherein: draw the tail device to fix in blow molding die bottom, draw the tail device including drawing piece (61), clamp splice (62), fixed layer board (63) and draw tail cylinder (64), corresponding breach groove (65) have all upwards been seted up to front mould (13) and back mould (14) bottom, breach groove (65) are located chamber (16) below, draw piece (61) activity to peg graft in breach groove (65) of back mould (14), clamp splice (62) fixed mounting is in breach groove (65) of front mould (13), fixed layer board (63) fixed mounting is in back mould (14) bottom, draw tail cylinder (64) to install on fixed layer board (63), draw the telescopic shaft of tail cylinder (64) and draw piece (61) bottom to be connected.

10. The scrap removal mechanism for a blow mold according to claim 9, wherein: the lateral wall level of pulling block (61) relative clamp splice (62) is provided with sand grip (66), sand grip (66) set up a plurality ofly along vertical direction interval.