CN201872329U - Connecting rod type mould opening and closing device - Google Patents

Abstract

The utility model relates to a connecting rod formula switch die device, including a fixing base that combines in the carousel, a die set and drive mechanism, the die set has left die carrier and the right die carrier that mutual pivot located the fixing base, and be equipped with the die holder in the below position between left and right die carrier, but the die holder is with vertical migration's setting in the fixing base, drive mechanism contains one can follow the slide of the radial direction displacement of carousel, and the slide bottom is equipped with a cam, and be equipped with a solid fixed ring below this carousel, this solid fixed ring be equipped with one with this cam complex cam groove. The utility model has the advantages that: the speed of opening and closing the die is improved, the required space between the connecting rod type die opening and closing devices is saved, and the production efficiency is further improved.

Description

Link type switch mold device

【Technical field】

The utility model relates to a device used in a bottle blowing machine, in particular to a connecting rod type switch mold device used in a mold of a blow molding unit and capable of accelerating the opening and closing speed of the mold.

【Background technique】

First, please refer to FIG. 1 , which is a schematic diagram of a blow molding workstation for producing plastic bottles such as PET. The blow molding machine 8 is generally composed of a preform feeding unit 81 , a heating unit 82 , a feeding unit 83 , a blow molding unit 84 and a finished product taking out unit 85 and the like.

Generally speaking, the preforms will first be input from the alignment device 811 of the embryo feeding unit 81, and then sent to the heating unit 82 through the transfer of the first conveying wheel 812, the second conveying wheel 813, and the third conveying wheel 814 in sequence. The heating unit 82 includes a plurality of transport parts 821, and the plurality of transport parts 821 form a heating transport path 822, and a plurality of heaters 823 and fans 824 are arranged along the heating transport path 822, so that each transport part 821 clamps When the preforms pass through the heaters 823 and fans 824 along the heating transport path 822, the preforms can be heated to the temperature required for blow molding, and then the preforms will be delivered to the mold 841 of the blow molding unit 84 by the feeding unit 83 , each mold 841 is placed on a turntable 842, and in the stroke that each mold 841 rotates with the turntable 842, the preform will be blow-molded into the required plastic bottle product, and finally the mold 841 is opened. And take out the plastic bottle finished product by this finished product taking-out unit 85, then this mold 841 just can be put into new preform again and carry out blow molding work again. The blow molding workstation structure has been disclosed in US Patent Application Publication No. US2010078861.

In terms of production efficiency, the blow molding unit can be said to be the bottleneck of the entire workstation among the above-mentioned units, and the bottleneck affecting the production efficiency of the blow molding unit lies in the speed of mold opening and closing, and the same size of the turntable The number of molds available for setting.

U.S. Patent Publication No. US20100203185 patent application discloses a mold opening and closing structure, which is mainly provided with two mutually pivoted mold brackets on a support base, one of which is fixed on the support base On the other hand, the other mold support is connected by a connecting rod group through a drive shaft so that the two mold supports can be combined or opened, and the drive shaft is pivotally arranged on one side of the two mold supports. On the support base, and the bottom end of the drive shaft is combined with another connecting rod group for a bottom mold base for interlocking, the bottom mold base is coaxially pivoted with the two mold supports, and one end of the bottom mold base is combined There is a cam, and the cam is wedged in an obliquely extending cam groove. When the drive shaft rotates, it will synchronously drive one of the mold brackets to pivot with the bottom mold base. When the mold bracket pivots, the mold will be opened, and Due to the limited cooperation between the cam and the recessed wheel groove, the bottom mold base will descend at the same time when it pivots, so as to achieve the effect of ejecting the mold, so as to take out the finished plastic bottle that has been blown in the mould.

Because to take out the finished plastic bottle, the two mold supports must be opened at a considerable angle, but in the structure of the aforementioned US Patent No. US20100203185 patent application, the two mold supports are in a form in which one is fixed and the other is movable and pivotable. It takes a long time to expand from a single mold support to the required angle, that is, the speed of opening and closing the mold is slow, which will affect the production efficiency.

Furthermore, the drive shaft is arranged on the outside of the movable and pivotable mold support, and there must be an appropriate movable space between the movable and pivotable mold support, the connecting rod group and the drive shaft, that is, the two groups of switch molds It is necessary to keep a relatively large distance between the structures. In this way, if the switch mold structure of the US Patent No. US20100203185 patent application is placed on the turntable 842 in Fig. 1, the number of molds can be set on the turntable of the same size It will be quite limited, and it will be difficult to improve production efficiency.

To sum up, the above-mentioned switch mode structure obviously needs to be further improved.

【Content of invention】

The technical problem to be solved by the utility model is to provide a link type switch mold structure with fast mold opening and closing speed and space saving.

The utility model solves the above-mentioned technical problems through the following technical solutions: a link type switch mode device, the link type switch mode device is arranged on a turntable, and the link type switch mode device includes: a combination set on The fixed seat on the turntable, a mold set located on the fixed seat, and a transmission mechanism, the mold set at least has a left mold base and a right mold base pivoted to each other, the distance between the left mold base and the right mold base is A space for placing molds is formed between them, and a bottom mold base is provided below the left mold base and the right mold base, and the bottom mold base can be vertically moved on the fixed seat; the transmission mechanism includes a A slide seat that displaces along the radial direction of the turntable, a cam is provided at the bottom of the slide seat, a fixed ring is provided under the turntable, and a cam groove is provided on the fixed ring to cooperate with the cam.

Further, the mold set is provided with a first shaft at a position adjacent to the center of the fixing seat for the pivoting of the left mold frame and the right mold frame.

Further, the bottom mold base is vertically arranged on the fixing seat through a vertically arranged first linear slide rail and a first sliding block.

Further, the sliding seat is arranged on the turntable or the fixed seat through a second linear slide rail and a second sliding block.

Further, a rod is provided at the bottom of the sliding seat, one end of the rod is connected with the sliding seat, and the other end is connected with the cam.

Further, a first connecting rod is respectively provided on both sides of the sliding seat, one end of each first connecting rod is respectively pivotally connected to the sliding seat, and the other end is respectively pivotally connected to a swing arm, and each of the swing arms is respectively connected to a pivot The second shaft arranged on the fixed seat, each of the second shafts is respectively combined with at least one long connecting rod, and the other end of each of the long connecting rods is respectively pivotally provided with a short connecting rod, and the other end of each of the short connecting rods is respectively pivoted Connect to the left or right formwork.

Further, each of the second shafts is respectively combined with a plurality of long connecting rods, and the other end of each long connecting rod is pivotally connected with a plurality of short connecting rods through a pivot.

Further, the sliding seat is combined with a plate body, and the plate body is provided with a roller groove corresponding to the bottom mold base, and the roller groove has a height drop along the displacement direction of the sliding seat, and the corresponding cam groove of the bottom mold base is provided with a Roller grooves match the rollers.

Further, the transmission mechanism is respectively provided with a second shaft pivotally arranged on the fixed seat corresponding to the left mold base and the right mold base, and each of the second shafts is respectively combined with at least one long connecting rod, and the other end of each of the long connecting rods A short connecting rod is respectively pivoted, and the other end of each short connecting rod is pivotally connected to the left mold base or the right mold base respectively, and a second connecting rod is respectively pivoted on both sides of the slide seat, and each of the second connecting rods The other ends of the rods are respectively pivotally connected to the pivot joints of the long connecting rod and the short connecting rod.

Further, a rod is extended downward from the sliding seat, and a connecting plate is connected to the position of the rod adjacent to the roller, and the two ends of the connecting plate are respectively combined with a plate body, and each plate body is respectively connected to the first linear slide rail through a third linear slide rail. The three sliders are set on the fixed seat, and each plate body is respectively provided with a roller groove corresponding to the base mold base. The roller groove has a height difference along the displacement direction of the slide base. The grooves match the rollers, and the bottom mold seat is located between the two plates.

The beneficial effect of the connecting rod type switching mold device of the utility model is that when the turntable and the fixed ring rotate relatively, the cam will drive the sliding seat to move with the change of the shape of the cam groove, and the left mold frame and the right mold frame will be synchronously driven by the sliding seat. The mold base and the bottom mold base are relatively matched or opened, so the speed of opening and closing the mold can be increased to improve production efficiency; moreover, the setting and displacement action direction of the transmission mechanism are mostly arranged along the radial direction of the turntable. Therefore, the interval space required between the two sets of connecting rod type switch mold devices is quite small, thereby saving space and improving production efficiency.

【Description of drawings】

The utility model will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is a structural configuration schematic diagram of an existing blow molding workstation;

Fig. 2 is a perspective view of the first embodiment of the utility model;

Fig. 3 is the front view of the first embodiment of the utility model;

Fig. 4 is a side view of the first embodiment of the utility model;

Fig. 5 is a bottom view of the first embodiment of the utility model;

Fig. 6 is one of the action schematic diagrams of the first embodiment of the utility model;

Fig. 7 is a three-dimensional structural schematic diagram of the connecting rod type switch mold device in the closed state according to the first embodiment of the present invention;

Fig. 8 is a three-dimensional structural schematic diagram of the connecting rod type switch mold device in the open state according to the first embodiment of the present invention;

Fig. 9 is a side view of the second embodiment of the utility model;

Fig. 10 is a bottom view of the second embodiment of the utility model.

【Detailed ways】

first embodiment

The annotations of the main components in the drawings of this embodiment: connecting rod type switch mold device 1, turntable 10, fixed seat 11, mold group 2, first shaft 20, left mold base 21, right mold base 22, mold 23, Bottom mold base 24, roller 241, first linear slide rail 25, first slide block 26, transmission mechanism 3, slide seat 31, second linear slide rail 311, second slide block 312, cam 313, rod 314, fixed Ring 32, cam groove 321, first connecting rod 33, swing arm 34, second shaft 35, long connecting rod 36, short connecting rod 37, pivot 38, plate body 39, roller groove 391.

Please refer to Fig. 2 to Fig. 5, the connecting rod type switching mold device 1 of the present invention is placed on a disc-shaped or annular turntable 10, and the turntable 10 is arranged in the blow molding unit of the blow molding workstation, and A plurality of connecting rod type switch mold devices 1 of the present invention are arranged at equal intervals on the turntable 10 . For the convenience of description and drawing, only a single connecting rod type switch mold device 1 is arranged on the turntable 10 for description and drawing below.

The connecting rod type switching mold device 1 is composed of a fixed seat 11, a mold group 2 and a transmission mechanism 3, the fixed seat 11 is combined and arranged on the turntable 10, and the mold group 2 is arranged on the fixed seat 11. The fixed base 11 is provided with a first shaft 20 adjacent to the central position, and a left mold frame 21 and a right mold frame 22 are pivoted on the first shaft 20, forming a mold frame between the left mold frame 21 and the right mold frame 22. One can place the space of mold 23 (as shown in Figure 2) for blow-molding plastic bottles, and a bottom mold base 24 is provided at the lower position between this left mold frame 21 and the right mold frame 22, for bottom mold (not shown). As shown in the figure), the bottom mold base 24 is vertically arranged on the fixed seat 11 through a vertically arranged first linear slide rail 25 and a first slide block 26, and the left mold base 21, the right mold base 22 and the bottom mold base 24 are driven by the transmission mechanism 3 to be relatively coupled or opened.

The transmission mechanism 3 has a sliding seat 31, the sliding seat 31 is set on the turntable 10 through a second linear slide rail 311 and a second slider 312, so that the sliding seat 31 can move along the radial direction of the turntable 10 Displacement, the bottom of the sliding seat 31 is connected with a rod 314, the bottom end of the rod 314 is provided with a cam 313, and a fixed ring 32 is provided below the turntable 10, the fixed ring 32 is provided with a cam groove 321, the cam groove 321 Has a predetermined shape, and the cam 313 matches the cam groove 321, that is, the cam 313 is placed in the cam groove 321, so that the cam 313 can follow the cam groove 321 through the relative rotation of the turntable 10 and the fixed ring 32. The change of shape drives the displacement of the sliding seat 31.

The two sides of the sliding seat 31 are respectively provided with a first connecting rod 33, one end of each first connecting rod 33 is respectively pivotally connected with the sliding seat 31, and the other end is respectively pivotally connected with a swing arm 34, and each swing arm 34 is respectively connected. A second shaft 35, each second shaft 35 is respectively pivotally arranged on the fixed base 11, and each of the second shafts 35 is respectively combined with at least one long connecting rod 36 corresponding to the left mold frame 21 and the right mold frame 22, the long The other end of the connecting rod 36 is pivotally provided with a short connecting rod 37, and the other end of the short connecting rod 37 is pivotally connected to the left formwork 21 or the right formwork 22, thereby, the displacement of the slide seat 31 can drive each second The shaft 35 rotates and drives the left mold frame 21 and the right mold frame 22 to engage or open. In this embodiment, each second shaft 35 is connected to a plurality of long connecting rods 36 respectively, and the other end of each long connecting rod 36 is pivotally connected to a plurality of short connecting rods 37 through a pivot 38 .

This sliding seat 31 is combined with a plate body 39 in addition, and this plate body 39 is provided with a roller groove 391 corresponding to this bottom mold base 24, and this roller groove 391 has height drop along the displacement direction of this slide base 31, and this bottom mold base 24 pairs Should the cam groove 321 be provided with a roller 241 matched with the roller groove 391, the bottom mold base 24 can be driven up and down along the first linear slide rail 25 by the slide seat 31.

Please refer to Fig. 6 to Fig. 8 again, the connecting rod type switch mold device 1 of the present utility model is fixedly arranged on the turntable 10, drives each link type switch mold device 1 to rotate and move relative to the fixed ring 32 through the turntable 10, During the moving process of the link type switch mold device 1 , the cam 313 of the transmission mechanism 3 will change its position according to the shape of the cam groove 321 , and then drive the sliding seat 31 to displace. When the connecting rod type switch mold device 1 is located at the left position in Fig. 6, the mold group 2 is in the closed state, and the long connecting rod 36 and the short connecting rod 37 are in the same straight line and can be regarded as a steel Body, when the preform in the mold is blown with high-pressure gas, the active force can be resisted by the long connecting rod 36 and the short connecting rod 37, so the closing of the left mold base 21 and the right mold base 22 can be ensured, and at the same time, the bottom mold base 24 is also in a top position under the limitation of the roller groove 391 of the plate body 39.

When the link type switch mold device 1 is displaced to the central position in Fig. 6, along with the change of the shape of the cam groove 321, the cam 313 will drive the sliding seat 31 to move away from the center of the fixed ring 32, and the The first connecting rod 33 and the swing arm 34 drive the second shaft 35 to pivot, and drive the long connecting rod 36 and the short connecting rod 37 to pivot, and then drive the left mold frame 21 and the right mold frame 22 to expand outward. , when the sliding seat 31 is displaced, the plate body 39 is also driven to be displaced, so that the bottom mold base 24 is guided by the roller groove 391 and descends. In other words, when the connecting rod type switch mold device 1 is displaced to this position At this time, the entire mold group 2 will be fully opened, so that the finished product take-out unit can take out the finished plastic bottle, or the feeding unit can feed the preform.

When the connecting rod type switch mold device 1 is displaced to the right position in Fig. 6, along with the change of the shape of the cam groove 321, the cam 313 will drive the sliding seat 31 to move towards the center of the fixed ring 32, and The first connecting rod 33 and the swing arm 34 drive the second shaft 35 to pivot, and drive the long connecting rod 36 and the short connecting rod 37 to pivot, and then drive the left mold frame 21 and the right mold frame 22 to lean inward. Together, when the sliding seat 31 is displaced, it will also drive the plate body 39 to displace, so that the bottom mold base 24 is guided upward by the roller groove 391, in other words, when the connecting rod type switch mold device 1 is displaced At this position, the entire mold group 2 will be completely closed, so that the blow molding unit can perform the preform blow molding work.

From the above-mentioned action process, it can be known that the left mold base 21 and the right mold base 22 in the present invention will pivot relative to each other synchronously under the drive of the transmission mechanism 3, so as to perform the closing or opening action, so it has a faster switch Die speed, which in turn helps to improve production efficiency; moreover, the setting and displacement action direction of the transmission mechanism 3 are mostly arranged along the radial direction of the turntable 10, so the space required by the two sets of connecting rod type switch mold devices 1 It is quite small, so that the number of molds that can be set on the turntable of the same size can be effectively increased, thereby improving production efficiency.

In order to simplify the description and facilitate the comparison of the differences between the various embodiments of the present invention, in the following description of another embodiment, only the differences will be described, and the similarities will not be repeated.

second embodiment

The annotations of the main components in the drawings of this embodiment: fixed seat 41, bracket 411, bottom mold base 54, roller 541, slide seat 61, second linear slide rail 611, second slide block 612, roller 613, rod 614 , connecting plate 615 , second connecting rod 63 , long connecting rod 66 , short connecting rod 67 , plate body 69 , roller groove 691 , third linear slide rail 692 , and third sliding block 693 .

Please refer to FIG. 9 and FIG. 10 , in this embodiment, the sliding seat 61 is assembled on the bracket 411 of the fixing base 41 through a second linear slide rail 611 and a second sliding block 612 , and the sliding seat 61 has two A second connecting rod 63 is pivotally arranged on each side, and the other end of each second connecting rod 63 is pivotally arranged at the pivot joint of the long connecting rod 66 and the short connecting rod 67, and the sliding seat 61 extending downwards The rod 614 is combined with a connecting plate 615 placed horizontally at a position adjacent to the roller 613. The connecting plate 615 is slightly C-shaped and combined with a plate body 69 at both ends, and each plate body 69 is formed by passing through a first The three linear slide rails 692 and the third slide block 693 are assembled on the fixed seat 41, and the bottom mold base 54 has a roller 541 corresponding to each plate body 69, and each roller 541 is respectively slidably arranged on each plate body In the roller groove 691 between 69, make this base mold base 54 be assembled between two plate bodies 69. In this way, the structure above the second embodiment of the present invention can also achieve the same effect as the aforementioned first embodiment.

The above descriptions are only two preferred embodiments of the utility model, and all equal changes and modifications made according to the scope of the patent application of the utility model should fall within the scope of the utility model.

Claims (10)

1. A connecting rod type switch mode device, which is arranged on a turntable, and said link type switch mode device includes a fixed seat which is arranged on the rotary table in combination, and a fixed seat which is arranged on the fixed seat The mold set and a transmission mechanism are characterized in that: the mold set has at least a left mold base and a right mold base pivoted to each other, and a space for placing a mold is formed between the left mold base and the right mold base , and there is a bottom mold base between the left mold base and the right mold base, and the bottom mold base can be vertically moved on the fixed seat; the transmission mechanism includes a slide seat that can be displaced along the radial direction of the turntable , a cam is provided at the bottom of the sliding seat, a fixed ring is provided under the turntable, and a cam groove cooperating with the cam is provided on the fixed ring. 2 . The connecting rod type switch mold device according to claim 1 , wherein the mold set is provided with a first shaft at a position adjacent to the center of the fixing base for the pivoting of the left mold frame and the right mold frame. 3 . 3. The connecting rod type switch mold device according to claim 1, characterized in that: the bottom mold base is vertically arranged on the fixed seat through a vertically arranged first linear slide rail and a first slider . 4 . The connecting rod type switching mold device according to claim 1 , wherein the sliding seat is arranged on the turntable or the fixed seat through a second linear slide rail and a second sliding block. 5 . 5. The connecting rod type switching mold device according to claim 1, wherein a rod is provided at the bottom of the sliding seat, one end of the rod is connected with the sliding seat, and the other end is connected with the cam. 6. The connecting rod type switching mold device according to claim 1, characterized in that: a first connecting rod is respectively provided on both sides of the sliding seat, and one end of each first connecting rod is respectively pivotally connected with the sliding seat, and the other One end is respectively pivotally connected with a swing arm, and each of the swing arms is respectively connected with a second shaft pivotally arranged on the fixed base, and each of the second shafts is respectively combined with at least one long connecting rod, and the other ends of each of the long connecting rods are respectively pivoted. A short connecting rod is provided, and the other end of each short connecting rod is pivotally connected to the left mold base or the right mold base. the 7. The connecting rod type switching mold device as claimed in claim 6, characterized in that: each of the second shafts is respectively combined with a plurality of long connecting rods, and the other end of each long connecting rod is connected to a plurality of long connecting rods through a pivot. The short link pivots. 8. The connecting rod type switch mold device as claimed in claim 1, characterized in that: the sliding seat is combined with a plate body, and the plate body is provided with a roller groove corresponding to the bottom mold base, and the roller groove is along the displacement of the sliding seat. There is a height difference in the direction, and a roller matching with the roller groove is provided on the corresponding cam groove of the bottom mold seat. 9. The connecting rod type switch mold device according to claim 1, characterized in that: said transmission mechanism is respectively provided with a second shaft pivoted on a fixed base corresponding to the left mold base and the right mold base, and each second shaft At least one long connecting rod is respectively combined, and the other end of each long connecting rod is respectively pivotally provided with a short connecting rod, and the other end of each of the short connecting rods is respectively pivotally connected to the left formwork or the right formwork, and the sliding seat A second connecting rod is pivotally arranged on both sides respectively, and the other end of each second connecting rod is respectively pivotally connected to the pivot joint of the long connecting rod and the short connecting rod. 10. The connecting rod type switching mold device according to claim 1, characterized in that: the sliding seat extends downwards with a rod, and the rod is connected with a connecting plate adjacent to the roller, and the two ends of the connecting plate are respectively connected with a The plates are combined, and each plate is respectively set on the fixed seat through a third linear slide rail and a third slider, and each plate is respectively provided with a roller groove corresponding to the base mold base, and the roller groove has a shape along the displacement direction of the slide seat There is a difference in height, the bottom mold base is respectively provided with a roller matching with the roller groove corresponding to each cam groove, and the bottom mold base is located between the two plate bodies. the

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