CN215203415U

CN215203415U - Blow molding mold for plastic bottle

Info

Publication number: CN215203415U
Application number: CN202121069042.2U
Authority: CN
Inventors: 樊磊
Original assignee: Shanghai Zhenjian Mould Technology Development Co ltd
Current assignee: Shanghai Zhenjian Mould Technology Development Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-12-17
Anticipated expiration: 2031-05-18

Abstract

The utility model relates to a blow mold for plastic bottle, it includes first curb plate and second curb plate, first curb plate and second curb plate all are vertical setting, one side that first curb plate thickness direction is close to the second curb plate is provided with first half mould, first half mould is located first curb plate upside, be provided with the second half mould on the second curb plate, the second half mould corresponds the setting with first half mould, first half mould downside is provided with the bottle die block, bottle die block downside is provided with the butt piece, bottle die block downside is provided with first inclined plane, first inclined plane sets up to second curb plate thickness direction slope along first curb plate, butt piece and first curb plate fixed connection, butt piece upside is provided with the second inclined plane, the second inclined plane is parallel with first inclined plane, first inclined plane and second inclined plane butt, first inclined plane and the cooperation of sliding of second inclined plane. This application has the effect that the half mould removes the condition of in-process damage plastic bottle when reducing the die sinking.

Description

Blow molding mold for plastic bottle

Technical Field

The application relates to the technical field of blow molding dies, in particular to a blow molding die for plastic bottles.

Background

The thermoplastic resin is extruded or injection molded to obtain tubular plastic parison, which is hot or heated to soften, and then placed in a split mold, after the mold is closed, compressed air is introduced into the parison to blow the plastic parison to cling to the inner wall of the mold, and after cooling and demolding, various hollow products are obtained. In order to ensure stability of the existing plastic bottle, the bottom of the plastic bottle is usually sunken inwards.

In the related art, a blow mold includes two body mold halves, the thickness direction of any one of the body mold halves is parallel to any radial direction of the body, and the two body mold halves move along the thickness direction thereof to close or separate when closing or opening the mold. In actual use, a worker puts a blow molding mold into a blow molding machine, the blow molding machine drives the two side bottle body half molds to move towards two sides deviating from each other, so that the mold is opened, the worker puts a plastic bottle blank between the two side molds from top to bottom, and the injection molding machine drives the two side bottle body half molds to approach each other and close the molds. The blow molding machine performs blow molding on the bottle blank. And after the blow molding is finished, the blow molding machine drives the bottle body half molds on the two sides to move towards the two sides which deviate from each other, and the molds are opened and the blow molded plastic bottle is taken out.

According to the related technology, when the bottom of the plastic bottle is inwards sunken, an upward bulge is arranged on any bottle body half-mold, in the mold opening process, the bulge part is difficult to separate from the depression of the plastic bottle body, and the defect that the plastic bottle is damaged by the bottle body half-mold in the mold opening process exists.

SUMMERY OF THE UTILITY MODEL

In order to reduce the condition that any body half-mode moves the in-process and damages the plastic bottle and take place in the mould opening process, this application provides a blow mold for plastic bottle.

The application provides a blow mold for plastic bottle adopts following technical scheme:

a blow mold for plastic bottles comprises a first side plate and a second side plate, wherein the first side plate and the second side plate are both vertically arranged, the thickness direction of the first side plate is parallel to the thickness direction of the second side plate, one side of the first side plate, which is close to the second side plate, is provided with a first half mold, the first half mold is positioned on the upper side of the first side plate, the second half mold is arranged on the second side plate and corresponds to the first half mold, a bottle bottom mold is arranged on the lower side of the first half mold, the bottle bottom mold is respectively matched with the first half mold and the second half mold in a sliding manner along the vertical direction, a butting block is arranged on the lower side of the bottle bottom mold, a first inclined surface is arranged on the lower side of the bottle bottom mold, the first inclined surface is obliquely arranged towards the second side plate along the thickness direction of the first side plate, and the side plate on the higher side of the first inclined surface along the thickness direction of the first side plate is fixedly connected with the first inclined surface, the butt joint piece upside is provided with the second inclined plane, the second inclined plane is parallel with first inclined plane, first inclined plane and second inclined plane butt, the cooperation of sliding of first inclined plane and second inclined plane.

By adopting the technical scheme, after the blow molding machine completes blow molding, the second side plate drives the abutting block to move towards one side departing from the first side plate, the first inclined surface and the second inclined surface slide relatively, the bottle bottom mold slides downwards under the action of gravity, the bottle bottom mold is separated from the bottom side of a finished plastic bottle product, and the first half mold and the second half mold are separated from the side wall of the plastic bottle. Through this kind of mode, make things convenient for the separation of blow mold and fashioned plastic bottle, help reducing the die sinking in-process, the bottle die block removes along arbitrary horizontal direction, and the condition of damaging the shaping plastic bottle takes place.

Preferably, the first inclined plane is arranged downwards along one side close to the second side plate to one side close to the first side plate in an inclined mode, and the first side plate is provided with a limiting assembly used for limiting the bottle bottom die.

Through adopting above-mentioned technical scheme, spacing subassembly carries on spacingly to the bottle die block, reduces the die sinking in-process, and the condition that the bottle die block drops from first curb plate takes place, helps improving the stability of bottle die block on blow mold, and when making the blow mold compound die, the butt piece promotes bottle die block automatic re-setting, helps improving blow mold's degree of automation.

Preferably, spacing subassembly includes the locating part, the locating part can be dismantled and fix the bottle die block and be close to one side of first curb plate along first curb plate thickness direction, be provided with waist type groove on the first half module, waist type groove is vertical setting, waist type groove runs through first half module along first curb plate thickness direction, waist type groove is worn to establish along first curb plate thickness direction to the locating part, the locating part slides the cooperation along vertical direction with waist type groove.

Through adopting above-mentioned technical scheme, locating part and waist type groove restriction bottle bottom mould move in vertical direction's certain degree, help reducing the condition emergence that the bottle bottom mould dropped from first half mould.

Preferably, the locating part is spacing bolt, spacing bolt axis direction is parallel with first curb plate thickness direction, the bottle die block is worn to establish by spacing bolt along its self axis direction, spacing bolt and bottle die block thread tightening, waist type groove is worn to establish by the nut of spacing bolt along its self axis direction to with the cooperation of sliding of waist type groove along vertical direction.

Through adopting above-mentioned technical scheme, when the nut downside butt of spacing bolt was on lateral wall under the waist type groove, bottle die block and first semi-module relatively fixed made first inclined plane and second inclined plane butt all the time, helped reducing first inclined plane and the separation of second inclined plane, lead to the compound die in-process, first inclined plane and the separation of second inclined plane, influence the butt piece and promote the condition of bottle die block and take place.

Preferably, be provided with spacing hole on the bottle die block, spacing hole and the coaxial setting of spacing bolt, the bottle die block is worn to establish from one side that is close to first curb plate along first curb plate thickness direction in spacing hole, one section that the nut of spacing bolt is close to the bottle die block is supported tightly on spacing hole diapire.

Through adopting above-mentioned technical scheme, spacing hole helps locating spacing bolt, helps reducing bottle die block and first half mould shearing spacing bolt, and the condition of destroying first half mould and bottle die block takes place, helps improving the stability of spacing bolt in spacing downthehole.

Preferably, be provided with the stopper on the first curb plate, the stopper is located first half mould downside, stopper and first curb plate fixed connection, the stopper is located butt piece downside, the stopper slides the cooperation along first curb plate thickness direction with the butt piece.

By adopting the technical scheme, the limiting block is abutted against the lower side of the abutting block, so that the mold opening and mold closing are facilitated to be reduced, and the bottle bottom mold is pressed downwards to enable the abutting block to cut off the current.

Preferably, be provided with the third inclined plane on the stopper, the third inclined plane sets up downwards along a lateral direction that is close to first curb plate to a lateral tilt that is close to the second curb plate, butt joint piece downside is provided with the fourth inclined plane, the fourth inclined plane is parallel with the third inclined plane, third inclined plane and fourth inclined plane butt, the cooperation of sliding of third inclined plane and fourth inclined plane.

Through thereby helping reducing the third and adopting above-mentioned technical scheme, the third inclined plane is parallel with the first inclined plane, and the butt joint piece has mainly helps reducing the condition that third inclined plane and fourth inclined plane break away from, helps improving the stability of bottle die block on first half mould, helps improving the stability of bottle die block in first side mould simultaneously.

Preferably, be provided with the slip face on the bottle die block, the vertical setting is personally submitted in sliding, the slip face is located the bottle die block and is close to one side of first curb plate along first curb plate thickness direction, spacing hole site is on the slip face, the cooperation of sliding along vertical direction with first half mould of slip face.

Through adopting above-mentioned technical scheme, the cooperation of sliding along vertical side with first half mould of slip face helps reducing first half mould and takes place around the condition of its self internal rotation to help reducing the bottle die block to the stability of spacing bolt nut, help further improving the stability that reduces the bottle die block.

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

by means of the sliding of the first inclined surface on the bottle bottom die and the second inclined surface on the abutting block, the bottle bottom die moves downwards and is separated from the bottom wall of the plastic bottle in the die opening process, the occurrence of the damage of the plastic bottle in the moving process of any bottle body half die in the die opening process is favorably reduced, the occurrence of the damage of the plastic bottle in the die opening process of the die is favorably reduced,

2. with the help of spacing bolt and waist type groove to the stroke of restriction bottle bottom mould helps reducing the downward excessive displacement of bottle bottom mould, makes the bottle bottom mould drop from first curb plate, helps reducing the repeated time of resetting installation bottle bottom mould of staff, improves work efficiency, helps improving the position precision of bottle bottom mould simultaneously, helps improving off-the-shelf product quality, reduces the disqualification rate.

3. With the help of stopper, third inclined plane and fourth inclined plane, make things convenient for the blow mold can in time be closed, the bottle die block resets, helps improving the stability of butt piece, improves work efficiency.

Drawings

FIG. 1 is a schematic axial view of a blow mold for plastic bottles according to an embodiment of the present invention;

FIG. 2 is a schematic axial view of the internal structure of a blow mold for plastic bottles according to an embodiment of the present invention;

fig. 3 is a sectional view mainly showing the internal structure of the blow mold for plastic bottles according to the embodiment of the present application.

Reference numerals: 1. a first side plate; 2. a first mold half; 21. a waist-shaped groove; 3. a bottle bottom die; 31. a first inclined surface; 32. a slip surface; 33. a limiting hole; 4. a limiting component; 41. a limiting member; 411. a limit bolt; 5. a limiting block; 51. a third inclined surface; 6. a second side plate; 7. a second mold half; 8. a butting block; 81. a second inclined surface; 82. a fourth inclined surface.

Detailed Description

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

The embodiment of the application discloses a blow mold for plastic bottle.

Referring to fig. 1, fig. 2, the blow mold for plastic bottles includes a first side plate 1 and a second side plate 6, the first side plate 1 and the second side plate 6 are both vertically disposed, a thickness direction of the first side plate 1 is parallel to a thickness direction of the second side plate 6, a first half mold 2 is disposed on one side of the first side plate 1 close to the second side plate 6, a second half mold 7 is disposed on one side of the second side plate 6 close to the first side plate 1, a bottle bottom mold 3 is disposed between the first half mold 2 and the second half mold 7, the bottle bottom mold 3 is vertically disposed, the bottle bottom mold 3 is slidably fitted with the first half mold 2 along a self axis direction, and the bottle bottom mold 3 is slidably fitted with the second half mold 7 along the self axis direction. A forming cavity is formed among the first side plate 1, the second side plate 6 and the bottle bottom die 3. In practice, the blow mold is fixed in the blow molding machine by a worker. The blowing machine removes first curb plate 1 and second curb plate 6 to the one side that deviates from each other, opens the blowing mould, puts into the shaping intracavity with the bottle base, and the blowing machine promotes first curb plate 1 and second curb plate 6 and removes to the one side that is close to each other, and the injection molding machine is with compressed air from the bottle base open mouthful injection bottle base in, with bottle base inflation and hug closely on the inner wall in shaping chamber, and the plastic bottle blow molding is accomplished to the drawing of patterns after the cooling promptly.

Specifically, referring to fig. 1 and 3, the lower end of the bottle bottom mold 3 is provided with a first inclined surface 31, and the first inclined surface 31 is arranged obliquely downward from the first side plate 1 to the second side plate 6 along the thickness direction of the first side plate 1. The second side plate 6 is provided with an abutting block 8, the abutting block 8 is fixedly connected with the second side plate 6, a second inclined surface 81 is arranged on the upper side of the abutting block 8, the second inclined surface 81 is parallel to the first inclined surface 31, the second inclined surface 81 abuts against the first inclined surface 31, and the second inclined surface 81 is matched with the first inclined surface 31 in a sliding mode. In the mould opening process, the second side plate 6 drives the abutting block 8 to move along one side of the second side plate 6 in the thickness direction and want to deviate from the first side plate 1, the first inclined plane 31 slides relative to the second inclined plane 81 and is separated from the second inclined plane 81, and the bottle bottom mould 3 moves downwards along the vertical direction under the action of gravity, so that the bottle bottom mould 3 is separated from the groove at the bottom of the finished plastic bottle. In the die closing process, the second side plate 6 pushes the abutting block 8 to move towards one side close to the first side plate 1 along the thickness direction of the second side plate 6, and the first inclined surface 31 and the second inclined surface 81 slide relatively, so that the bottle bottom die 3 is pushed to move upwards along the vertical direction, and the bottle bottom die 3 is reset.

The lower side of the abutting block 8 is provided with a third inclined surface 51, and the third inclined surface 51 is inclined downwards along the thickness direction of the first side plate 1 from the side close to the first side plate 1 to the side close to the second side plate 6. One side of the first side plate 1 close to the second side plate 6 in the thickness direction is provided with a limiting block 5, the limiting block 5 is located on the lower side of the first side plate 1, and the limiting block 5 is fixedly connected with the first side plate 1. The stopper 5 is provided with a fourth inclined surface 82, and the fourth inclined surface 82 is parallel to the third inclined surface 51. The fourth inclined surface 82 abuts on the third inclined surface 51, and the fourth inclined surface 82 is slidably fitted to the third inclined surface 51. In the die closing process, the second side plate 6 pushes the abutting block 8 to move towards one side close to the first side plate 1 along the thickness direction of the second side plate 6, and the first inclined surface 31 and the second inclined surface 81 slide relatively. The first side plate 1 pushes the abutting block to move towards the side close to the second side plate 6 along the thickness direction of the first side plate 1, and the third inclined surface 51 and the fourth inclined surface 82 slide relatively. The abutting block 8 helps to reduce the phenomenon that the limiting block 5 is damaged when the bottle bottom die 3 exerts downward pressure on the limiting block 5 in the process that the limiting block 5 pushes the bottle bottom die 3. The abutment block 8 helps to improve the stability of the stopper 5 on the second side plate 6 during the blow molding process.

The bottle bottom die 3 is provided with the slip surface 32 along one side that first curb plate 1 thickness direction is close to first curb plate 1, and the slip surface 32 is vertical setting, and the cooperation of sliding of slip surface 32 along vertical direction and first half mould 2. Be provided with spacing hole 33 on the slip plane 32, spacing hole 33 is the level setting, and spacing hole 33 axis direction is parallel with first curb plate 1 thickness direction, and spacing hole 33 wears to establish bottle die block 3 along its one side that self axis direction is close to first curb plate 1 to the one side that is close to second curb plate 6. The bottle bottom die 3 is further provided with a limiting component 4, the limiting component 4 comprises a limiting part 41, and the limiting part 41 is a limiting bolt 411. The limiting bolt 411 and the limiting hole 33 are coaxially arranged, the limiting bolt 411 penetrates through the bottle bottom die 3 along the axis direction of the limiting bolt 411, and the limiting bolt 411 is in threaded connection with the bottle bottom die 3. The nut of the limit bolt 411 is abutted against the bottom wall of the limit hole 33 at the end deviating from the first side plate 1.

The first half die 2 is provided with a waist-shaped groove 21, the waist-shaped groove 21 is vertically arranged, and the waist-shaped groove 21 penetrates through the first half die 2 along the thickness direction of the first side plate 1. The nut of the limit bolt 411 is positioned in the waist-shaped groove 21, and the nut of the limit bolt 411 is matched with the waist-shaped groove 21 in a sliding mode along the vertical direction. In the mold opening process, when the lower side of the nut of the limit bolt 411 is abutted against the side wall of the lower side of the waist-shaped groove 21, the bottle bottom mold 3 is separated from the concave part of the plastic bottle bottom. Spacing bolt 411 restriction bottle die block 3 continues to slide downwards, makes bottle die block 3 relatively fixed on first half mould 2, through this kind of mode, helps restricting bottle die block 3 and removes in predetermineeing the stroke, reduces the possibility that bottle die block 3 dropped from first curb plate 1, resets bottle die block 3 when conveniently closing the mould.

The implementation principle of the blow mold for the plastic bottle in the embodiment of the application is as follows: the staff installs the blowing mould in the blowing machine, the blowing machine drives first curb plate 1 and second curb plate 6 and removes to the one side that deviates from each other, first curb plate 1 drives first half mould 2 and stopper 5 and removes, first half mould 2 drives bottle die block 3 and removes to the one side that deviates from second curb plate 6, second curb plate 6 drives butt piece 8 and removes to the one side that deviates from first curb plate 1, first inclined plane 31 slides with second inclined plane 81 relatively, third inclined plane 51 and fourth inclined plane 82 slide relatively, bottle die block 3 slides downwards along vertical direction, slip face 32 and first half mould 2 remove along vertical direction, stop bolt 411 slides in waist type groove 21, when stop bolt 411 nut and the 21 downside butt in waist type groove, stop bolt 411 is spacing to bottle die block 3, the completion is to the die sinking of blowing mould.

The worker puts the injection-molded bottle blank between the first half mold 2 and the second half mold 7, and the blow molding machine drives the first side plate 1 and the second side plate 6 to move towards one side close to each other. First curb plate 1 drives first half mould 2 and stopper 5 and removes, first half mould 2 drives bottle die block 3 and removes to the one side that is close to second curb plate 6, second curb plate 6 drives the one side removal of butt piece 8 to being close to first curb plate 1, first inclined plane 31 slides with second inclined plane 81 relatively, third inclined plane 51 and fourth inclined plane 82 slide relatively, bottle die block 3 upwards slides along vertical direction, slip plane 32 moves along vertical direction with first half mould 2 to accomplish the reseing to bottle die block 3. Through this kind of mode, make things convenient for injection molding machine die sinking or compound die, simple structure, the precision is higher to help reducing the manufacturing cost of mould, help improving the finished product qualification rate of piece that blows simultaneously, reduce the regular mould in-process of blow molding mould, the condition of damaging the plastic bottle takes place.

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. The utility model provides a plastic bottle is with blow mold, includes first curb plate (1) and second curb plate (6), first curb plate (1) and second curb plate (6) all are vertical setting, first curb plate (1) thickness direction is parallel with second curb plate (6) thickness direction, its characterized in that: one side of the first side plate (1), the thickness direction of which is close to the second side plate (6), is provided with a first half die (2), the first half die (2) is positioned on the upper side of the first side plate (1), the second half die (7) is arranged on the second side plate (6), the second half die (7) is arranged corresponding to the first half die (2), the lower side of the first half die (2) is provided with a bottle bottom die (3), the bottle bottom die (3) is respectively matched with the first half die (2) and the second half die (7) in a sliding manner along the vertical direction, the lower side of the bottle bottom die (3) is provided with a butt-joint block (8), the lower side of the bottle bottom die (3) is provided with a first inclined plane (31), the first inclined plane (31) is arranged in an inclined manner towards the second side plate (6) along the thickness direction of the first side plate (1), and the butt-joint block (8) is fixedly connected with the first inclined plane (31) along the side plate on the higher side of the thickness direction of the first side plate (1), the butt joint piece (8) upside is provided with second inclined plane (81), second inclined plane (81) are parallel with first inclined plane (31), first inclined plane (31) and second inclined plane (81) butt, cooperation of sliding of first inclined plane (31) and second inclined plane (81).

2. The blow mold for plastic bottles of claim 1, characterized in that: first inclined plane (31) are along being close to the slope of one side of second curb plate (6) to being close to one side of first curb plate (1) and set up downwards, be provided with on first curb plate (1) and be used for carrying on spacing subassembly (4) to bottle die block (3).

3. The blow mold for plastic bottles of claim 2, characterized in that: spacing subassembly (4) include locating part (41), locating part (41) can be dismantled to fix and be close to one side of first curb plate (1) along first curb plate (1) thickness direction in bottle die block (3), be provided with waist type groove (21) on first half mould (2), waist type groove (21) are vertical setting, first half mould (2) are run through along first curb plate (1) thickness direction in waist type groove (21), waist type groove (21) are worn to establish along first curb plate (1) thickness direction in locating part (41), locating part (41) and waist type groove (21) are along vertical direction cooperation of sliding.

4. A blow mold for plastic bottles according to claim 3, characterized in that: locating part (41) is limiting bolt (411), limiting bolt (411) axis direction is parallel with first curb plate (1) thickness direction, bottle die block (3) is worn to establish along its self axis direction in limiting bolt (411), limiting bolt (411) and bottle die block (3) thread tightening, waist type groove (21) are worn to establish along its self axis direction to the nut of limiting bolt (411) to with waist type groove (21) along vertical direction cooperation of sliding.

5. The blow mold for plastic bottles of claim 4, characterized in that: be provided with spacing hole (33) on bottle die block (3), spacing hole (33) and spacing bolt (411) coaxial setting, bottle die block (3) is worn to establish from one side that is close to first curb plate (1) along first curb plate (1) thickness direction in spacing hole (33), one section that the nut of spacing bolt (411) is close to bottle die block (3) is supported tightly on spacing hole (33) diapire.

6. The blow mold for plastic bottles of claim 1, characterized in that: be provided with stopper (5) on first curb plate (1), stopper (5) are located first half mould (2) downside, stopper (5) and first curb plate (1) fixed connection, stopper (5) are located butt joint piece (8) downside, stopper (5) and butt joint piece (8) are along the cooperation of sliding of first curb plate (1) thickness direction.

7. The blow mold for plastic bottles of claim 6, characterized in that: be provided with third inclined plane (51) on stopper (5), third inclined plane (51) set up downwards along a lateral direction that is close to first curb plate (1) to a lateral tilt that is close to second curb plate (6), butt piece (8) downside is provided with fourth inclined plane (82), fourth inclined plane (82) are parallel with third inclined plane (51), third inclined plane (51) and fourth inclined plane (82) butt, cooperation of sliding of third inclined plane (51) and fourth inclined plane (82).

8. The blow mold for plastic bottles of claim 5, characterized in that: be provided with slip face (32) on bottle die block (3), slip face (32) are vertical setting, slip face (32) are located bottle die block (3) and are close to one side of first curb plate (1) along first curb plate (1) thickness direction, spacing hole (33) are located slip face (32), slip face (32) and first half mould (2) are along the cooperation of sliding of vertical direction.