CN211164978U

CN211164978U - Clamping mechanism of foaming machine

Info

Publication number: CN211164978U
Application number: CN201921893955.9U
Authority: CN
Inventors: 许金城
Original assignee: Jinjiang Lichengxiang Machinery Technology Co ltd
Current assignee: Jinjiang Lichengxiang Machinery Technology Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-08-04
Anticipated expiration: 2029-11-05

Abstract

The utility model discloses a clamping mechanism of foaming machine, including movable mould and fixed plate, and translation drive arrangement, the equal fixed mounting of fixed plate and translation drive arrangement is in same frame, movable mould and fixed plate are erecting the setting in the frame, and relative interval arrangement around being, translation drive arrangement is in movable mould the place ahead, translation drive arrangement's power take off end is connected with the movable mould, the boost cylinder of two at least accumbencies has set firmly on the trailing flank of fixed plate, boost cylinder's piston rod passes the fixed plate, and stretch out to the movable mould direction, the movable mould is installed on boost cylinder's piston rod with the mode to the reciprocal translation of fixed plate direction, the movable mould is passed in the preceding tip activity of boost cylinder's piston rod, be provided with pretension mechanism on the preceding terminal surface of movable mould. The utility model discloses the clamping mechanism of foaming machine, not only simple structure, fault rate are low, and the mode locking is firm moreover, can avoid the mould to reduce the defective percentage effectively in the inflation displacement that takes place when penetrating the material, improves production efficiency, reduce cost.

Description

Clamping mechanism of foaming machine

Technical Field

The utility model relates to a foaming former technical field, concretely relates to is a clamping mechanism of foaming machine.

Background

The foaming forming machine has a similar working principle to an injector, and is a process of injecting a plasticized raw material in a molten state into a closed mold cavity by means of the thrust of a driving mechanism, and obtaining a product after solidification and shaping.

In the working process of the foaming forming machine, the requirement on a fixing structure of a mold and a mold mounting table is very high, wherein the requirement on a mold locking mechanism is higher. The mold locking mechanism of the existing foaming molding machine has a complex structure and high failure rate, and when a material is injected for foaming, the mold is heated and the pressure intensity is increased, the mold locking force provided by the mold locking mechanism is unchanged, so that the mold is not locked stably, and the mold is easy to shift (namely, a movable mold and a fixed mold slightly move). On the one hand, the abrasion of the die is aggravated, and the service life of the die is influenced. The other side is poor mold closing sealing performance, which causes the defective rate to rise (namely, overflow edges appear on the edges of obtained products), not only wastes raw materials, but also causes the appearance of the products to be unattractive. The residual upper overflow edge of the product needs to be manually trimmed, so that the cost input is increased, and the production efficiency cannot be improved. Therefore, further improvement of the mold locking mechanism of the existing foaming molding machine is urgently needed.

In view of the above, the present inventors have made extensive studies on a clamping mechanism of a conventional foam molding machine, and have made the present invention.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a clamping mechanism of foaming machine, not only simple structure, fault rate are low, and the mode locking is firm moreover, can avoid the mould to penetrate the inflation displacement that takes place when expecting effectively, reduces the defective percentage, improves production efficiency, reduce cost.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a clamping mechanism of a foaming machine comprises a movable die for mounting a male die or a female die of a forming die, a fixed plate for mounting a female die or the male die of the forming die, and a translation driving device for controlling the movable die to do reciprocating translation movement towards the fixed plate to realize die assembly or die opening, wherein the fixed plate and the translation driving device are fixedly mounted on the same frame, the movable die and the fixed plate are vertically arranged on the frame and are arranged in a front-back opposite interval manner, the translation driving device is positioned in front of the movable die, the power output end of the translation driving device is connected with the movable die, at least two horizontal pressurizing oil cylinders are fixedly arranged on the rear side surface of the fixed plate, piston rods of the pressurizing oil cylinders penetrate through the fixed plate and extend towards the movable die, and the movable die is mounted on the piston rods of the pressurizing oil cylinders in a reciprocating translation manner towards the direction of the fixed plate, the front end part of a piston rod of the pressurizing oil cylinder movably penetrates through the movable mold, a pre-tightening mechanism for limiting the movable mold and the forming mold on the fixed plate to be attached and avoiding forward micro-movement is arranged on the front end face of the movable mold, and the working end of the pre-tightening mechanism is connected with the piston rod of the pressurizing oil cylinder.

Further, translation drive arrangement includes a crossbeam, two pull rod hydro-cylinders and two supporting seats, two the supporting seat corresponds the left side and the right side of fixed plate are arranged, be provided with the confession on the supporting seat the third through-hole that the piston rod of pressure boost hydro-cylinder passed, two the supporting seat is fixed on the horizontal plane, the crossbeam is in two the supporting seat front side, the both ends of crossbeam respectively with two supporting seat middle part fixed connection, two the pull rod hydro-cylinder is all fixed on the crossbeam to near two respectively the supporting seat is arranged, two the piston rod of pull rod hydro-cylinder all passes the crossbeam to respectively through the oil bar connector with movable mould fixed connection.

Further, the pre-tightening mechanism comprises an upper clamping block, a lower clamping block and a lifting oil cylinder positioned between the upper clamping block and the lower clamping block, the upper clamping block comprises a first half clamping block and a second half clamping block which are arranged oppositely from top to bottom, the lower clamping block comprises a third half clamping block and a fourth half clamping block which are arranged oppositely from top to bottom, the first half clamping block, the second half clamping block, the third half clamping block and the fourth half clamping block are sequentially arranged from top to bottom, the lower bottom surface of the first half clamping block and the lower bottom surface of the third half clamping block are both concavely provided with upper concave cavities for the upper parts of piston rods of the pressurizing oil cylinders to be embedded in, the top surface of the second half clamping block and the top surface of the fourth half clamping block are both concavely provided with lower concave cavities for the lower parts of the piston rods of the pressurizing oil cylinders to be embedded in, and the first half clamping block and the third half clamping block are fixedly connected in series through a first vertical connecting rod, the first vertical connecting rod movably penetrates through the second half clamping block, the second half clamping block and the fourth half clamping block are fixedly connected in series through the second vertical connecting rod, the second vertical connecting rod movably penetrates through the third half clamping block, the cylinder body of the lifting oil cylinder is fixedly erected on the top surface of the third half clamping block, the free end of the piston rod of the lifting oil cylinder is arranged upward, the free end of the piston rod of the lifting oil cylinder is fixedly connected with the second half clamping block, a supporting block for supporting the piston rod of the lifting oil cylinder is sleeved outside the free end of the piston rod of the lifting oil cylinder, the supporting block is located below the second half clamping block, and the supporting block is locked on the front side surface of the movable die.

Furthermore, four pressurizing oil cylinders are arranged, wherein two pressurizing oil cylinders are positioned on the left side of the fixed plate and are arranged in an up-down alignment mode, and the other two pressurizing oil cylinders are positioned on the right side of the fixed plate and are arranged in an up-down alignment mode.

Furthermore, a buffer mechanism used for a recoil action during die assembly is installed on the fixed plate, the buffer mechanism comprises an even number of positioning pins and springs arranged corresponding to the positioning pins, each positioning pin is provided with a threaded section, the front side of the fixed plate is provided with threaded holes for installation of the positioning pins, the threaded holes are divided into two groups, the two groups of threaded holes are respectively arranged corresponding to the left side and the right side of the fixed plate, the positioning pins are locked on the fixed plate through the threaded holes, blind holes are formed in the positions, corresponding to the positioning pins, on the movable die, and the springs are installed in the blind holes.

Furthermore, the left side surface and the right side surface of the fixed plate are respectively fixedly connected with the corresponding side surfaces of the supporting seats through a fixed rod.

Furthermore, the left side surface and the right side surface of the fixed plate are respectively fixedly connected with the supporting seat through a guide rail, and the left side surface and the right side surface of the movable die are respectively provided with a sliding block which is used for corresponding sliding fit of the guide rails.

The utility model discloses a profitable effect is: the piston rod of the pressurizing oil cylinder directly serves as a guide rail or a guide pillar for moving the movable mold, so the structure is simpler, the transmission part is simplified, and the failure rate is low. During operation, translation drive arrangement promotes the movable mould and removes to the fixed plate, and forming die carries out the compound die on movable mould and the fixed plate, carries out the centre gripping through pretension mechanism to the piston rod of pressure cylinder fixed, and then restricts the movable mould and remove for forming die on movable mould and the fixed plate laminates mutually, avoids the movable mould to take place to move a little forward, realizes the one-level mode locking to forming die. When melting materials are injected into the forming dies on the movable die and the fixed die at high pressure, the pressurizing oil cylinder works, the piston rod retracts, the movable die and the fixed die are pulled to be closer, and the die locking force is increased when the movable die and the fixed die are closed. And the two-stage mold locking of the forming mold is realized through the retraction action of a piston rod of the pressurizing oil cylinder. The phenomenon that injected melting materials impact a forming die cavity of the forming die and the melting materials are foamed and deformed in the die is overcome, outward opening force is generated on the forming die, the forming die cannot displace through two stages of different die locking, and the die locking is firm. The material leakage is avoided, the foaming precision is improved, the overflow edge at the edge of a product which is not closed tightly is avoided, the defective rate is reduced, the cost is saved, and the efficiency is improved. Meanwhile, the displacement of the forming die can be avoided, and the service life of the die is prolonged. Is beneficial to promoting the development of the foaming forming machine industry. Therefore, the utility model relates to a clamping mechanism of foaming machine, it is simple structure not only, the fault rate is low, and the mode locking is firm moreover, can avoid the mould to penetrate the inflation displacement that takes place when expecting effectively, reduces the defective percentage, improves production efficiency, reduce cost.

Drawings

For ease of illustration, the present invention is described in detail by the following detailed description and accompanying drawings.

Fig. 1 is a schematic view of a three-dimensional structure of a mold locking mechanism of the foaming machine of the present invention.

Fig. 2 is a front view of the mold clamping mechanism of the foaming machine of the present invention.

Fig. 3 is a side view of the mold clamping mechanism of the foaming machine of the present invention.

Fig. 4 is a schematic structural diagram of a movable mold of the mold locking mechanism of the foaming machine of the present invention.

In the figure:

a moving mold-1; a fixed plate-2; a cross beam-31; a pull rod cylinder-32; a support base-33; -34 a mast connector; a forming die-4; reinforcing ribs-5; a material gun mounting plate-8; a booster oil cylinder-9; a lift cylinder-001; a first half clamp block-01; a second half clamping block-02; a third half clamp block-03; a fourth half clamp block-04; a first vertical connecting rod-05; a second vertical link-06.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

As shown in figures 1-4, the clamping mechanism of the foaming machine of the utility model comprises a movable mold 1 and a fixed plate 2 which are vertically arranged, and a translation driving device for controlling the movable mold 1 to reciprocate to the fixed plate 2 to realize mold closing or mold opening, a male die or a female die of a forming die 4 is arranged on one surface of the movable die 1 opposite to the fixed plate 2, a female die or a male die of the forming die 4 is arranged on one surface of the fixed plate 2 opposite to the movable die 1, the fixed plate 2 and the translation driving device are both fixedly arranged on the same frame, the fixed part of the translation driving device is connected with the fixed plate 2 through a guide piece (specifically, a piston rod of a booster oil cylinder in the following description), the power output end of the translation driving device is connected with the movable mold 1 and controls the movable mold 1 to perform reciprocating translation movement towards the fixed plate 2 (namely, the translation driving device controls the mold closing action or the mold opening action of the movable mold 1 and the fixed plate 2). By adopting the structure, the installation of the forming die 4 for foaming can be realized only by arranging the movable die 1 and the fixed plate 2, so that the installation structure of the forming die 4 is simple and has small volume; the power output end of the translation driving device directly controls the die assembly action or the die opening action of the movable die 1 and the fixed plate 2, the structure is simple, the transmission efficiency is high, and the energy loss reducing effect can be achieved, so that the cost is reduced. The movable mould 1 and the fixed plate 2 are arranged oppositely in front and back, so that the forming mould 4 is in a horizontal structure, the whole space of the foaming machine is greatly reduced, and the operation is easy.

The utility model relates to a clamping mechanism of a foaming machine, wherein a movable mould 1 and a fixed plate 2 are arranged on the same horizontal plane at a relative interval in the front and back direction, the translation driving device is positioned in front of the movable mould, the power output end of the translation driving device is connected with the movable mould 1, at least two horizontal booster cylinders 9 are fixedly arranged on the rear side surface of the fixed plate 2, piston rods of the booster cylinders 9 penetrate through the fixed plate 2, and extends towards the direction of the movable mould 1, the movable mould 1 is arranged on a piston rod of the booster oil cylinder 9 in a manner of reciprocating translation towards the direction of the fixed plate 2, the front end part of a piston rod of the booster oil cylinder 9 movably penetrates through the movable mold 1, a pre-tightening mechanism for limiting the movable mold 1 to be attached to the fixed plate 2 to avoid forward micro-movement is arranged on the front end face of the movable mold 1, and the working end of the pre-tightening mechanism is connected with the piston rod of the booster oil cylinder 9. Adopt above-mentioned structure setting, translation drive arrangement promotes movable mould 1 and removes to fixed plate 2, and forming die 4 carries out the compound die on movable mould 1 and the fixed plate 2, and after the compound die, carries out the centre gripping through pretension mechanism to boost cylinder's piston rod fixed, and then the restriction movable mould removes for forming die 4 on movable mould 1 and the fixed plate 2 laminates mutually, avoids movable mould 1 to take place to move a little forward, realizes the one-level mode locking. When high-pressure melting materials are injected into forming molds on the movable mold 1 and the fixed plate 2, the pressurizing oil cylinder 9 works to enable the piston rod to retract, the movable mold 1 and the fixed plate 2 are pulled to be closer, secondary mold locking is realized, and mold locking force when the movable mold 1 and the fixed plate 2 are closed is increased. And then can not foam deformation in the mould because of injecting molten foaming raw materials and molten foaming raw materials (melting material) and cause forming die 4 to shift, the mode locking is more stable and firm.

The translation driving device comprises a cross beam 31, two pull rod oil cylinders 32 (the pull rod oil cylinders adopt the existing pull rod oil cylinders) and two supporting seats 33, the two supporting seats 33 are arranged corresponding to the left side and the right side of the fixed plate 2, the supporting seat 33 is provided with a third through hole for the piston rod of the booster cylinder 9 to pass through (namely, the two supporting seats 33 at the left and right sides of the fixed plate 2 are opposite to each other for the piston rods of the two corresponding booster cylinders 9 to pass through respectively), the cross beam 31 is positioned at the front side of the two supporting seats 33, the two end parts of the cross beam 31 are respectively fixedly connected with the middle parts of the two supporting seats 33, the two pull rod oil cylinders 32 are both fixed on the cross beam 31, and are respectively arranged close to the two support seats 33, the piston rods of the two pull rod oil cylinders 32 penetrate through the cross beam 31 and are respectively fixedly connected with the movable die 1 through an oil rod connector 34 (the oil rod connector 34 adopts the existing oil rod connector). With the above structure, the cross beam 31 and the two support seats 33 form a stable structure, so as to provide stable installation for the pull rod cylinder 32. Two pull rod oil cylinders 32 are adopted to push the movable mould 1 at the same time, so that the stress balance of the movable mould 1 is ensured, the movable mould 1 can move stably, and the movable mould 1 is easier to be broken. The two supporting seats 33 are arranged, so that the second end of the piston rod of the booster oil cylinder 9 can be correspondingly supported and fixed, and the booster oil cylinder 9 is also stably installed. The oil rod connector 34 is arranged and has the following two functions: firstly, the piston rod of the pull rod oil cylinder 32 is convenient to be fixed and connected with the movable die 1. Secondly, the stress area is increased, so that the joint of the piston rod of the pull rod oil cylinder 32 and the movable die 1 is more difficult to crack or break.

The utility model discloses in, be fixed with on the crossbeam 31 and be in crossbeam 31 front side is fixed with strengthening rib strip 5, strengthening rib strip 5 extends along crossbeam 31 length direction, and can be right through strengthening rib strip 5 crossbeam 31 plays the processing effect.

In this embodiment, the pre-tightening mechanism includes an upper clamping block, a lower clamping block, and a lift cylinder 001 located between the upper clamping block and the lower clamping block, the upper clamping block includes a first half clamping block 01 and a second half clamping block 02 which are disposed opposite to each other from top to bottom, the lower clamping block includes a third half clamping block 03 and a fourth half clamping block 04 which are disposed opposite to each other from top to bottom, the first half clamping block 01, the second half clamping block 02, the third half clamping block 03, and the fourth half clamping block 04 are sequentially disposed from top to bottom, an upper concave cavity for embedding the upper portion of the piston rod of the boost cylinder 9 therein is recessed in both the lower bottom surface of the first half clamping block 01 and the lower bottom surface of the third half clamping block 03, the upper concave cavity is a concave arc cavity which is matched with the second cylinder and smaller than a semicircle, and a lower concave cavity for embedding the lower portion of the piston rod of the boost cylinder 9 therein is recessed in both the top surface of the second half clamping block 02 and the top surface of the fourth half clamping block 04, the lower cavity is a concave arc cavity which is matched with the outer wall of the piston rod of the booster cylinder 9 and is smaller than a semicircle, the outer wall of the piston rod of the booster cylinder 9 can be clamped by the upper cavity and the lower cavity, the first half clamping block 01 and the third half clamping block 03 are fixedly connected in series through a first vertical connecting rod 05, the first vertical connecting rod 05 movably penetrates through the second half clamping block 02, the second half clamping block 02 and the fourth half clamping block 04 are fixedly connected in series through a second vertical connecting rod 06, the second vertical connecting rod 06 movably penetrates through the third half clamping block 03, the cylinder body of the lifting cylinder 001 is fixedly erected on the top surface of the third half clamping block 03, the free end part of the piston rod of the lifting cylinder 001 is arranged upwards, the free end part of the piston rod of the lifting cylinder 001 is fixedly connected with the second half clamping block 02, and a supporting block for supporting the piston rod of the lifting cylinder is sleeved outside the free end of the piston rod of the lifting cylinder 001, the supporting block is located below the second half clamping block 02 and locked on the front side surface of the movable die 1. By adopting the structure, the structure is simple and reasonable. When the lifting oil cylinder 001 extends, the second half clamping block 02 moves upwards, the third half clamping block 03 moves downwards, the second half clamping block 02 moves upwards to pull the fourth half clamping block 04 to move upwards, the third half clamping block 03 moves downwards to pull the first half clamping block 01 to move downwards, and the relative movement of the first half clamping block 01 and the second half clamping block 02 and the relative movement of the third half clamping block and the fourth half clamping block 04 enable the upper half clamping block and the lower clamping block to clamp the piston rod of the corresponding boosting oil cylinder 9 all the time by using the cylinder body pressure of the lifting oil cylinder 001. And the piston rod of the booster oil cylinder 9 is vertical to the moving direction, so the piston rod is not easy to loosen. When the pre-tightening mechanism is used for closing the mold, the movable mold 1 can be always attached to the fixed plate 2, a certain pressing force is provided for the fixed plate 2, and the molding quality of the molding mold 4 is better. Specifically, the contraction amount of a piston rod of the booster oil cylinder 9 is 5-10 mm.

In this embodiment, four pressurizing cylinders 9 are provided, wherein two pressurizing cylinders 9 are located on the left side of the fixed plate 2 and are arranged in an up-down alignment manner, and the other two pressurizing cylinders 9 are located on the right side of the fixed plate 2 and are arranged in an up-down alignment manner. By adopting the structure, the moving die 1 can be stably guided to the fixed plate 2. Piston rods of the four booster cylinders 9 directly penetrate through the fixed plate 2, and the movable mold 1 is directly arranged on the piston rods of the four booster cylinders 9, so that the whole structure is small in size, small in occupied space, few in parts, simple and easy in structure, easy to maintain and low in failure rate.

Specifically, the movable die 1 is provided with a fourth through hole through which the piston rod of the booster cylinder 9 passes, the movable die 1 is provided with a shaft sleeve or a sleeve corresponding to the fourth through hole for reducing wear, and the piston rod of the booster cylinder 9 passes through the shaft sleeve or the sleeve. The piston rod shrinkage of the booster cylinder 9 is 2-6mm (the piston rod shrinkage of the booster cylinder 9 is 5 mm), the length of the piston rod of the booster cylinder 9 penetrating through the supporting seat 33 is larger than 10mm, and the piston rod of the booster cylinder 9 is also slipped off from the supporting seat 33 because the piston rod shrinkage of the booster cylinder 9 is small.

In this embodiment, the fixed plate 2 is provided with a buffer mechanism for a recoil action during mold closing, the buffer mechanism includes an even number of positioning pins (not shown in the figure) and springs (not shown in the figure) arranged corresponding to the positioning pins, each positioning pin is provided with a thread section, the front side of the fixed plate 2 is provided with a thread hole for installation of the positioning pin, the thread holes are divided into two groups, the two groups of thread holes are respectively arranged corresponding to the left side and the right side of the fixed plate 2, the positioning pin is locked on the fixed plate through the thread hole, the movable mold 1 is provided with a blind hole corresponding to the position of the fixed pin, and the springs are installed in the blind holes. By adopting the structure, the arranged buffer mechanism can play a role of recoil when the movable die approaches the fixed plate during die assembly, and the collision of the forming die 4 used for forming on the movable die 1 and the fixed plate 2 is avoided. Specifically, the method comprises the following steps: when the die is assembled, the positioning pin is pushed under the action of the elastic force of the spring, so that the movable die 1 can play a role in buffering when approaching the fixed plate 2. When the mold is opened, the spring is in a compressed state and generates an abutting force for the positioning pin, so that the mold opening of the forming mold 4 is facilitated. Just can change through changing the spring, to the ejection force of locating pin, change the cushion effect when movable mould 1 is close to with fixed plate 2, simple structure, the maintenance of being convenient for.

As a further preference of the present embodiment, four of the positioning pins are disposed on the fixed plate 2 (i.e. four of the positioning pins are correspondingly disposed on four corners of the front side plate of the fixed plate 2). Thus, the movable mold 1 and the fixed plate 2 are stressed and buffered in a balanced manner, and the movable mold 1 and the fixed plate 2 are tightly matched with the forming mold 4 for forming.

In this embodiment, the left side and the right side of the fixed plate 2 are respectively connected to the side fixed connection (specifically, the left side of the fixed plate 2 is connected to the supporting seat 33 through a fixing rod, and the right side of the fixed plate 2 is connected to the supporting seat 33 through a fixing rod, and the supporting seat 33 is connected to the right side of the fixed plate 2 through a fixing rod, so that the fixed plate 2 and the two supporting seats 33 fixed to the horizontal plane jointly form a whole, and the whole structure is more stable.

In this embodiment, the left and right side surfaces of the fixed plate 2 are respectively fixedly connected to the corresponding support seats through a guide rail, and the left and right side surfaces of the movable mold 1 are respectively provided with corresponding slide blocks in sliding fit with the guide rails.

In this embodiment, a channel (not shown in the figure) is formed in the fixed plate 2, the channel is used for allowing melted materials to enter a cavity of the forming mold, the channel penetrates through the front end face and the rear end face of the fixed plate 2, a gun mounting plate 8 is mounted on the rear end face of the fixed plate 2, and a gun (not shown in the figure) extending into the channel is mounted on the gun mounting plate 8. Adopt above-mentioned structure setting, the spray gun mounting panel 8 of setting, mainly used carries out the shutoff to the back port of passageway, is convenient for simultaneously fix and install the spray gun. The heat preservation effect is also facilitated after the die is closed and injected. The fixed plate 2 is provided with a channel, so that a material gun can conveniently inject molten raw materials into the fixed plate 2 and the movable die 1 to be matched in a forming die cavity.

In the further optimization of the embodiment, the slide rail or the fixed rod is provided with a sensing device for limiting the movement of the movable mold, when the movable mold works, the sensing device is triggered to feed back information to a PC L control system on the foaming machine, the PC L control system receives information and processes information, and the PC L control system controls the operation and stop of the pull rod oil cylinder 32, the PC L control system controls the working time sequence of the pull rod oil cylinder 32, the lifting oil cylinder 001 and the booster oil cylinder 9, the PC L control system sets the working time sequence of the pull rod oil cylinder 32, the lifting oil cylinder 001 and the booster oil cylinder 9 through programming, and the PC L control system sets the working time sequence through programming.

It should be noted that: when the die is closed, a piston rod of the pull rod oil cylinder 32 is equivalent to an ejector rod for stopping back and always abuts against the movable die 1 (no matter whether the pull rod oil cylinder 32 works, the piston rod is kept abutting against the movable die 1 at this time), and at this time, the locking is primary locking. At the moment, the pre-tightening mechanism is equivalent to a locking mechanism for locking the movable mould 1, so that the movable mould 1 is prevented from moving forwards. And the piston rod of the booster cylinder is matched with the pre-tightening mechanism and is equivalent to a pull rod with a hook head (the piston rod of the booster cylinder 9 is equivalent to the pull rod, and the pre-tightening mechanism is equivalent to the hook head), and the hook head is driven by the pull rod to lock the movable mold 1 again, namely, the two-stage locking is carried out at the moment. According to different time intervals of mold closing production actions, the same forming mold 4 is locked twice with different locking forces (namely two-stage locking), so that the locking effect is better. Therefore, the structure is simple, the design is reasonable and the device is very practical. Therefore, the utility model discloses the clamping mechanism of foaming machine, it is low that simple structure, fault rate are not only, and the mode locking is firm moreover, can avoid the mould to penetrate the inflation displacement that takes place when expecting effectively, reduces the defective percentage, improves production efficiency, reduce cost. Is more beneficial to promoting the development of the foaming forming machine industry.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. The utility model provides a clamping mechanism of foaming machine, includes the movable mould that supplies the installation of forming die public mould or master model and the fixed plate that supplies the installation of forming die master model or public mould to and with and control the movable mould to the reciprocal translation motion realization compound die of fixed plate or the translation drive arrangement of die sinking, fixed plate with translation drive arrangement is equal fixed mounting in same frame, its characterized in that: the movable mould with the fixed plate is erectly arranged on the rack and is arranged at a front-back relative interval, the translation driving device is positioned in front of the movable mould, the power output end of the translation driving device is connected with the movable mould, at least two horizontal pressurizing oil cylinders are fixedly arranged on the rear side surface of the fixed plate, piston rods of the pressurizing oil cylinders penetrate through the fixed plate and extend out towards the movable mould, the movable mould is arranged on the piston rods of the pressurizing oil cylinders in a reciprocating translation mode towards the direction of the fixed plate, the front end parts of the piston rods of the pressurizing oil cylinders movably penetrate through the movable mould, a pre-tightening mechanism for limiting the movable mould and a forming mould on the fixed plate to be attached to avoid forward micro-movement is arranged on the front end surface of the movable mould, and the working end of the pre-tightening mechanism is connected with the piston rods of the pressurizing oil cylinders.

2. The clamping mechanism of a foaming machine according to claim 1, wherein: translation drive arrangement includes a crossbeam, two pull rod hydro-cylinders and two supporting seats, two the supporting seat corresponds the left side and the right side of fixed plate are arranged, be provided with the confession on the supporting seat the third through-hole that the piston rod of pressure boost hydro-cylinder passed, two the supporting seat is fixed on the horizontal plane, the crossbeam is in two the supporting seat front side, the both ends of crossbeam respectively with two supporting seat middle part fixed connection, two the pull rod hydro-cylinder is all fixed on the crossbeam to near two respectively the supporting seat is arranged, two the piston rod of pull rod hydro-cylinder all passes the crossbeam to respectively through the oil lever connector with movable mould fixed connection.

3. The clamping mechanism of a foaming machine according to claim 2, wherein: the pre-tightening mechanism comprises an upper clamping block, a lower clamping block and a lifting oil cylinder positioned between the upper clamping block and the lower clamping block, the upper clamping block comprises a first half clamping block and a second half clamping block which are oppositely arranged up and down, the lower clamping block comprises a third half clamping block and a fourth half clamping block which are oppositely arranged up and down, the first half clamping block, the second half clamping block, the third half clamping block and the fourth half clamping block are sequentially arranged from top to bottom, the lower bottom surface of the first half clamping block and the lower bottom surface of the third half clamping block are both concavely provided with an upper concave cavity for the upper part of a piston rod of the booster oil cylinder to be embedded into, the top surface of the second half clamping block and the top surface of the fourth half clamping block are both concavely provided with a lower concave cavity for the lower part of the piston rod of the booster oil cylinder to be embedded into, the first half clamping block and the third half clamping block are fixedly connected in series through a first vertical connecting rod, and the first vertical connecting rod movably penetrates through the second half clamping block, the second half clamping block and the fourth half clamping block are fixedly connected in series through a second vertical connecting rod, the second vertical connecting rod movably penetrates through the third half clamping block, a cylinder body of the lifting oil cylinder is fixedly erected on the top surface of the third half clamping block, the end part of the free end of a piston rod of the lifting oil cylinder is arranged upwards, the end part of the free end of the piston rod of the lifting oil cylinder is fixedly connected with the second half clamping block, a supporting block for supporting the piston rod of the lifting air cylinder is sleeved outside the free end of the piston rod of the lifting oil cylinder, the supporting block is located below the second half clamping block, and the supporting block is locked on the front side surface of the movable mold.

4. The clamping mechanism of a foaming machine according to claim 1 or 2, wherein: the four pressurizing oil cylinders are arranged, two of the pressurizing oil cylinders are located on the left side of the fixed plate and are arranged in an up-down alignment mode, and the other two pressurizing oil cylinders are located on the right side of the fixed plate and are arranged in an up-down alignment mode.

5. The clamping mechanism of a foaming machine according to any one of claims 1 to 3, wherein: the fixed plate is provided with a buffer mechanism used for a recoil action during die assembly, the buffer mechanism comprises an even number of positioning pins and springs arranged corresponding to the positioning pins, each positioning pin is provided with a thread section, the front side of the fixed plate is provided with a threaded hole for mounting the positioning pins, the threaded holes are divided into two groups, the two groups of threaded holes are respectively arranged corresponding to the left side and the right side of the fixed plate, the positioning pins are locked on the fixed plate through the threaded holes, the movable die is provided with blind holes corresponding to the positions of the fixed pins, and the springs are arranged in the blind holes.

6. The clamping mechanism of a foaming machine according to claim 2, wherein: the left side surface and the right side surface of the fixed plate are respectively fixedly connected with the corresponding side surfaces of the supporting seats through a fixed rod.

7. The clamping mechanism of a foaming machine according to claim 2 or 6, wherein: the left side surface and the right side surface of the fixed plate are respectively fixedly connected with the supporting seat through a guide rail, and the left side surface and the right side surface of the movable die are respectively provided with a sliding block which is used for corresponding sliding fit of the guide rails.