阅读说明：本技术 一种吹塑成型设备 (Blow molding equipment ) 是由 周明忠 于 2021-08-31 设计创作，主要内容包括：本发明提供了一种吹塑成型设备,包括：吹塑单元：合模成型单元：至少设有一组合模成型单元,合模成型单元内开设有成型空腔；冷却单元：包括用于对合模成型单元本体进行冷却的冷却循环装置和对合模成型单元内工件进行冷却的紊流装置；冷却循环装置与合模成型单元的设置数量一一对应；脱模驱动件：设置在合模成型单元内,通过连通冷却循环装置以控制脱模驱动件驱使合模成型单元紧密相抵或留有间隙；工位转换单元：用于带动合模成型单元做周向转动,依次更换合模成型单元的工作位置；本发明对工件进行有效冷却与脱模作业；且结构简单,操作稳定,保证工件成型质量均匀；有效提高成产效率,减少人力损耗。(The present invention provides a blow molding apparatus comprising: a blow molding unit: a mold closing and molding unit: at least one set of die assembly forming unit is arranged, and a forming cavity is formed in the die assembly forming unit; a cooling unit: the cooling circulation device is used for cooling the die assembly forming unit body and the turbulence device is used for cooling the workpiece in the die assembly forming unit; the cooling circulation devices correspond to the mold closing and forming units one by one in number; demoulding driving piece: the cooling circulation device is communicated to control the demoulding driving piece to drive the mould closing and forming unit to be tightly abutted or leave a gap; station conversion unit: the mould closing and forming unit is used for driving the mould closing and forming unit to rotate in the circumferential direction, and the working positions of the mould closing and forming unit are sequentially changed; the invention effectively cools and demolds the workpiece; the structure is simple, the operation is stable, and the forming quality of the workpiece is ensured to be uniform; effectively improve the production efficiency and reduce the manpower loss.)

1. A blow molding apparatus, comprising:

blow molding unit (1): for feeding and heat blow molding the billet into a workpiece;

mold-closing molding unit (2): the device is at least provided with a set of die assembly forming unit (2), wherein a forming cavity (221) is formed in the die assembly forming unit (2) and is used for receiving and fixing a blank extruded by the blow molding unit (1) and matching with the blow molding unit (1) to perform hot blow molding on the blank to form a workpiece;

cooling unit (5): comprises a water cooler (51), a cooling circulation device (52) for cooling the body of the die assembly forming unit (2) and a turbulent device (53) for cooling the workpiece in the die assembly forming unit (2); the water cooler (51) is communicated with the cooling circulation device (52) and the turbulent flow device (53); the cooling circulation devices (52) correspond to the mold closing and forming units (2) in number one by one;

demolding driving piece (3): the cooling circulation device (52) is communicated to control the demoulding driving part (3) to drive the mould closing and forming unit (2) to tightly abut against or leave a gap;

station conversion unit (6): the device is used for driving the die-closing molding unit (2) to rotate in the circumferential direction and sequentially replacing the working positions of the die-closing molding unit (2); the cooling circulation device (52) is fixed on the station conversion unit (6) and synchronously rotates along with the die closing forming unit (2).

2. A blow-moulding plant as claimed in claim 1, wherein said blow-moulding unit (1) comprises: the device comprises a first mounting frame (11), a first extrusion mechanism (12), a material barrel (13), a conveying and supplying channel (14), a second extrusion mechanism (15) and a forming and blowing piece (16); the first extrusion mechanism (12) is fixed on the first mounting frame (11), and part of the first extrusion mechanism extends into the charging barrel (13); a discharge port arranged at the bottom of the charging barrel (13) is communicated with a conveying and supplying channel (14); one end of the conveying and supplying channel (14) is provided with a heating element (17); the second extruding mechanism (15) is arranged at one end of the conveying and supplying channel (14) close to the heating element (17); the molding air blowing piece (16) is movably arranged on the first mounting frame (11), and an air blowing opening (161) formed in the molding air blowing piece is arranged towards the mold closing molding unit (2).

3. A blow molding apparatus according to claim 1, wherein the mold clamping unit (2) includes: a fixed seat (21) and a fixed half mold (22) provided with a molding cavity (221) inside; the fixed seats (21) are oppositely arranged and detachably connected with corresponding fixed half moulds (22); a cooling channel (222) for a cooling unit (5) to pass through is arranged in the fixed half mould (22); the demolding driving part (3) is arranged between the fixed seat (21) and the fixed half mold (22); the demolding driving piece (3) drives the fixed half mold (22) to be close to or far away from the fixed seat (21).

4. A blow molding apparatus according to claim 3, wherein the mold clamping unit (2) further comprises: a drive assembly (23); the drive assembly (23) comprises: a hinged seat (231) arranged on the fixed seat (21) and a push rod (232) used for driving the fixed seat (21) arranged on the hinged seat (231) to be abutted or separated; one end of the push rod (232) is connected with the hinge seat (231), and the other end of the push rod is fixed on the station conversion unit (6).

5. A blow-moulding apparatus as claimed in claim 3, wherein said ejection drive (3) comprises:

the mounting block (31), the fixed block (32) and the movable piece (33);

the mounting block (31) is fixedly connected with the fixed seat (21), the fixed block (32) is mounted on the fixed half mold (22), and a drainage channel (321) communicated with the cooling channel (222) is formed in the fixed block; a partition plate (4) is arranged on the inner wall of the drainage channel (321);

the movable member (33) includes: a stopper (331), an elastic member (332), and a link (333); the stop block (331) is arranged in the drainage channel (321) in a sliding manner through the elastic piece (332) and can move to abut against the partition plate (4) so as to divide the drainage channel (321) into a plurality of independent chambers; one end of the connecting rod (333) facing away from the elastic piece (332) vertically penetrates through the fixing block (32) and then is fixedly connected with the mounting block (31); when cooling liquid in the cooling circulation device flows into the drainage channel (321) through the cooling channel (222), the stop block (331) is driven to move to be separated from the partition plate (4) so as to drive the connecting rod (333) to be gradually accommodated into the fixed block (32) and drive the fixed half mold (22) to move horizontally close to the fixed seat (21); when the cooling circulation device stops running, the elastic piece (332) drives the stop block (331) to reset, so that the synchronous part of the connecting rod (333) is withdrawn from the fixed block (32), and the fixed half mould (22) is reset.

6. A blow-moulding apparatus as claimed in claim 5, wherein said ejection drive member (3) further comprises: a flow guide plate (41); the drainage plate (41) is accommodated in the drainage channel (321) of the fixing block (32); when the stop block (331) is abutted against the drainage plate (41) and the partition plate (4), the acting force of the cooling liquid in the drainage channel (321) on the stop block (331) is completely opposite to the acting force of the elastic piece (332) on the stop block (331).

7. A blow molding apparatus according to claim 5 or 6, wherein the cooling cycle device (52) includes: a feed pipe (521) and a discharge pipe (522); the water cooler (51) is connected with the feed pipe (521) and the discharge pipe (522) at one end, and the other end of the feed pipe and the discharge pipe are respectively communicated with the cooling channel (222).

8. A blow moulding apparatus as in claim 5 or 6, wherein said turbulence means (53) comprise: a vent valve (531), a lifting piece (532) and a flexible air pipe (533); the flexible air pipe (533) is connected with the water cooler (51), and the vent valve (531) is arranged at the connection part of the flexible air pipe (533) and the water cooler (51); the lifting piece (532) is connected with the flexible air pipe (533) and drives the flexible air pipe (533) to do reciprocating lifting motion towards one side of the die assembly forming unit (2).

9. A blow moulding apparatus as claimed in claim 5 or 6, wherein said station changing unit (6) comprises: a working support table (61), a rotating table (62) and a rotating motor (63); the rotating table (62) is rotationally arranged on the working support table (61) through a rotating motor (63); the matched mold forming unit (2) is fixed on the rotating table (62).

10. A blow molding apparatus as claimed in claim 9, further comprising: a blanking unit (7); the blanking unit (7) is arranged adjacent to the station conversion unit (6) and is positioned at the blanking end at the bottom of the die assembly forming unit (2); the blanking unit (7) comprises: a conveying piece (71) and a blanking assembly (72);

the conveying piece (71) is abutted against the working support platform (61), and a coaming plate (73) is arranged on the side wall of one end, close to the working support platform (61), of the conveying piece (71);

the blanking assembly (72) comprises: the device comprises a driving motor (721), a second telescopic rod (722) and a material stirring piece (723); the driving motor (721) is fixed on the side wall of the conveying piece (71), and the power output end of the driving motor (721) is connected with the second telescopic rod (722) to drive the material stirring piece (723) to move towards the die closing forming unit (2);

the material pulling part (723) comprises: the driving device comprises a cross rod (7231) fixedly connected with the second telescopic rod (722), a micro motor (7232) fixed on the cross rod (7231), and a driving lever (7233) rotatably arranged on the cross rod (7231) and driven by the micro motor (7232).

Technical Field

The invention relates to the technical field of plastic production equipment, in particular to blow molding equipment.

Background

In the production process of preparing hollow plastic products, a workpiece blown and molded by the blow molding machine needs to be transferred to a flash removing station to remove flash, and then the workpiece is transferred to a cooling station to be cooled after the flash is removed. The existing cooling modes mainly comprise the following two modes: the first method is cooling in a mold of a blow molding machine, which can ensure the finished product quality of a workpiece, but takes a long time, and affects the molding efficiency of blow molding of the blow molding machine; the second method adopts a natural cooling mode after demolding, but the workpiece is easy to deform in the cooling process.

Based on the natural cooling method described above, it is generally necessary to transfer the workpiece to a cooling station, and the conventional transportation methods are mainly classified into two types: one is by means of a forklift or similar mechanical handling device; secondly, carrying in a manual mode; the former has the disadvantages that: the workpiece cannot be reasonably positioned, so that the workpiece is easy to roll off and damage in the transfer process, and the forklift is difficult to place the workpiece to a cooling position (the position of a cooling air nozzle) of a cooling platform of a cooling station according to the process requirement, and the latter is that the temperature of the plastic melt is higher, and heat is still released in the cooling process, so that the temperature of the working environment is higher, and the working environment is severe; when the device works, workers need to stand for a long time to work, the working efficiency is not high, the working labor intensity is high, injury accidents such as scalding are prone to occurring, the effect is poor, and the forming rate is poor.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides plastic blow molding equipment, which solves the technical problems of poor cooling effect and high labor intensity in the prior art.

According to an embodiment of the present invention, a blow molding apparatus includes:

a blow molding unit: for feeding and heat blow molding the billet into a workpiece;

a mold closing and molding unit: the mould closing and forming unit is at least provided with a forming cavity for receiving the blank extruded from the fixed blow molding unit and is matched with the blow molding unit to blow and mold the blank into a workpiece;

a cooling unit: the cooling device comprises a water cooler, a cooling circulating device for cooling a die assembly forming unit body and a turbulent flow device for cooling a workpiece in the die assembly forming unit; the water cooler is communicated with the cooling circulation device and the turbulent flow device; the cooling circulation devices correspond to the mold closing and forming units one by one in number;

demoulding driving piece: the cooling circulation device is communicated to control the demoulding driving piece to drive the mould closing and forming unit to be tightly abutted or leave a gap;

station conversion unit: the mould closing and forming unit is used for driving the mould closing and forming unit to rotate in the circumferential direction, and the working positions of the mould closing and forming unit are sequentially changed; the cooling circulation device is fixed on the station conversion unit and synchronously rotates along with the die closing forming unit.

By adopting the technical means, after the die closing forming unit is matched with the blow molding unit to perform blow molding operation on the workpiece, the die closing forming unit is rotated to the cooling station through the station conversion unit, the workpiece subjected to blow molding is subjected to air cooling operation in advance through the arranged turbulent device, the workpiece is cooled again through the arranged cooling circulating device, and the cooling circulating device is acted on the die closing forming unit through the demoulding driving piece communicated with the cooling circulating device so as to cool the workpiece and remove materials, so that the workpiece is prevented from being adhered to the inside of the die closing forming unit.

Further, the demolding driving member includes:

the device comprises an installation block, a fixed block and a movable piece;

the mounting block is fixedly connected with the fixed seat, the fixed block is mounted on the fixed half mold, and a drainage channel communicated with the cooling channel is formed in the fixed block; a partition board is arranged on the inner wall of the drainage channel;

the moving part includes: a stop block, an elastic piece and a connecting rod; the baffle block is arranged in the drainage channel in a sliding manner through the elastic piece and can move to be abutted against the partition plate so as to divide the drainage channel into a plurality of independent chambers; one end of the connecting rod facing away from the elastic piece vertically penetrates through the fixing block and then is fixedly connected with the mounting block; when the cooling liquid in the cooling circulation device flows into the drainage channel through the cooling channel, the stop block is driven to move to be separated from the partition plate so as to drive the connecting rod to be gradually accommodated in the fixed block and drive the fixed half module to horizontally move close to the fixed seat; when the cooling circulation device stops running, the elastic piece drives the stop block to reset, so that the synchronous part of the connecting rod exits from the fixed block, and the fixed half module resets; thereby realizing the separation and offset operation between the fixed half moulds and facilitating the smooth demoulding of the workpiece.

As another embodiment of the present invention, the demold driving member further includes: a drainage plate; the drainage plate is accommodated in the drainage channel of the fixed block; when the stop block is all offset with drainage plate, baffle, the effort of cooling liquid in the drainage channel to the stop block is completely opposite with the effort of elastic component to the stop block to the separation operation can effectively be realized with drainage plate and baffle to the stop block.

Further, the method also comprises the following steps: a blanking unit; the blanking unit is arranged between the cooling unit and the blow molding unit; the unloading unit includes: a conveying member and a blanking assembly; the conveying piece is abutted against the working support platform, and a coaming is arranged on the side wall of one end, close to the working support platform, of the conveying piece; the unloading subassembly includes: the driving motor, the second telescopic rod and the material stirring piece are arranged on the frame; the driving motor is fixed on the side wall of the conveying assembly, and a power output end of the driving motor is connected with the second telescopic rod to drive the material shifting piece to move towards the die assembly forming unit; the material shifting piece comprises: the driving device comprises a cross rod fixedly connected with the second telescopic rod, a micro motor fixed on the cross rod and a driving lever rotationally arranged on the cross rod and driven by the micro motor.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention carries out air cooling operation on the workpiece in the forming cavity through the arranged turbulent flow device; at the moment, because the workpieces are cooled and shrunk, part of the workpieces are attached to the inside of the die assembly forming unit, the cooling circulation device carries out auxiliary cooling operation on the die assembly forming unit and cooperates with the demolding driving piece to drive a forming cavity in the die assembly forming unit to leave a gap, so that the workpieces are effectively demolded; the structure is simple, the operation is stable, and the forming quality of the workpiece is ensured to be uniform;

2. the station conversion unit is arranged to drive the die assembly forming unit to convert the station, so that the production efficiency is effectively improved, and the manpower loss is reduced;

3. and the precision of product processing is improved by adopting mechanical cooperation.

Drawings

FIG. 1 is a schematic diagram of the main structure of the embodiment of the present invention;

FIG. 2 is a schematic view of the mounting positions of the first connecting member, the stationary mold half and the stationary seat according to the embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a cross-sectional view of a first connector in an original state according to an embodiment of the present invention;

FIG. 5 is a perspective cross-sectional view of a first connector in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a second connector in an embodiment of the present invention;

FIG. 7 is a schematic diagram of a cooling unit according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a blanking unit in the embodiment of the present invention.

In the above drawings:

1. a blow molding unit; 11. a first mounting bracket; 12. a first extrusion mechanism; 13. a charging barrel; 14. a delivery supply channel; 15. a second extrusion mechanism; 16. forming a blowing piece; 161. an air blowing port; 17. a heating member;

2. a mold closing and molding unit; 21. a fixed seat; 22. a stationary half-mold; 221. forming a cavity; 222. a cooling channel; 23. a drive assembly; 231. a hinged seat; 232. a push rod;

3. a demolding driving member; 31. mounting blocks; 32. a fixed block; 321. a drainage channel; 33. a movable member; 331. a stopper; 332. an elastic member; 333. a connecting rod;

4. a partition plate; 41. a drainage plate;

5. a cooling unit; 51. a water chiller; 52. a cooling circulation device; 521. a feed pipe; 522. a discharge pipe; 53. a turbulent flow device; 531. a vent valve; 532. a lifting member; 533. a flexible trachea;

6. a station conversion unit; 61. a working support table; 62. a rotating table; 63. rotating the motor;

7. a blanking unit; 71. a conveying member; 72. a blanking assembly; 721. a drive motor; 722. a second telescopic rod; 723. material stirring parts; 7231. a cross bar; 7232. a micro motor; 7233. a deflector rod; 73. and (4) enclosing plates.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

As shown in fig. 1, a blow molding apparatus includes:

the blow molding unit 1: for feeding and heat blow molding the billet into a workpiece;

wherein: the blow molding unit 1 includes: the device comprises a first mounting frame 11, a first extrusion mechanism 12, a material barrel 13, a conveying and supplying channel 14, a second extrusion mechanism 15 and a forming and blowing piece 16;

the first mounting frame 11 is fixed on the ground, the conveying and supplying channel 14 is fixed on the first mounting frame 11, and the first extruding mechanism 12 is fixed on the first mounting frame 11 and partially extends into the charging barrel 13; a discharge port arranged at the bottom of the charging barrel 13 is communicated with the conveying and supplying channel 14 so as to directly convey materials into the conveying and supplying channel 14; one end of the delivery supply passage 14 is provided with a heating member 17 (optionally a heating wire); the second extrusion mechanism 15 is arranged at one end of the conveying and supplying channel 14 close to the heating element 17 (namely the front end of the conveying and supplying channel 14), and the blank is preheated by the arranged heating element 17 so as to facilitate the later blow molding operation; the forming blowing piece 16 (in actual operation, blowing operation is performed on the workpiece by an external air pump, and for further convenience in operation, the forming blowing piece 16 can perform reciprocating lifting operation by an external telescopic air pump so as to blow the workpiece) is movably arranged on the first mounting frame 11, and a blowing port 161 arranged on the forming blowing piece is vertically arranged downwards towards the die assembly forming unit 2;

mold-closing molding unit 2: the three-component die assembly forming unit 2 is selected for the convenience of operation and process requirements, a forming cavity 221 is formed in the three-component die assembly forming unit 2 and used for receiving a blank extruded from the blow molding unit 1, and the blank is subjected to hot blow molding by matching with the blow molding unit 1 and is shaped into a workpiece according to the shape of a die cavity at the die assembly forming unit 2;

as shown in fig. 1 and 2, wherein: the mold clamping and molding unit 2 includes: a fixed seat 21 and a fixed half-mold 22 provided with a molding cavity 221; the fixed seats 21 are oppositely arranged and detachably connected with corresponding fixed half moulds 22; a cooling channel 222 for the cooling unit 5 to pass through is arranged in the fixed half-mold 22; wherein the cooling channel 222 in the stationary mold half 22 is disposed in an inverted U-shaped configuration, i.e. the cooling liquid in the cooling channel 222 extends from one side of the bottom of the stationary mold half 22 and then flows out from the other side of the bottom, so as to effectively cool the inner cavity of the stationary mold half 22 (and the configuration is easy to associate, and will not be separately described in the drawings);

the mold clamping and molding unit 2 shown in fig. 1 further includes: a drive assembly 23; the driving assembly 23 includes: a hinge seat 231 mounted on the fixed seat 21 and a push rod 232 (using a telescopic air pump) for driving the fixed seat 21 arranged on the hinge seat 231 to abut against or separate from each other; one end of the push rod 232 is connected with the hinge seat 231, and the other end is fixed on the station conversion unit 6, so that when the opposite fixed half-moulds 22 need to be closed or opened, the horizontal reciprocating telescopic motion of the push rod 232 on the station conversion unit 6 can be realized, namely when the push rods 232 do the extension motion mutually, the fixed seat 21 is pushed to move and the fixed half-moulds 22 are abutted; when the push rod 232 makes a retracting movement, the fixed seat 21 is pulled to move and separate the fixed mold half 22.

Cooling unit 5 shown in fig. 1 and 7: comprises a water cooler 51, a cooling circulation device 52 for cooling the body of the die assembly forming unit 2 and a turbulent device 53 for cooling the workpiece in the die assembly forming unit 2; the water cooler 51 is communicated with the cooling circulation device 52 and the turbulent device 53; the cooling circulation devices 52 correspond to the mold closing and forming units 2 in number one by one, so three groups of cooling circulation devices 52 are arranged in the invention;

wherein, the cooling cycle device 52 includes: feed pipe 521 and discharge pipe 522; the feed pipe 521 and the discharge pipe 522 are connected with the water chiller 51 at one end and are respectively communicated with the cooling channel 222 at the other end; in actual operation, the inlet pipe 521 is connected to the inlet port because the cooling channel 222 on the stationary mold half 22 is provided with an inlet and an outlet; the discharge pipe 522 is communicated with the outlet, so that the cooling liquid can be recycled, the energy consumption is saved, and the recycling is realized.

The turbulent device 53 includes: a vent valve 531, a lifting member 532 (using a telescopic air pump), and a flexible air pipe 533; the flexible air pipe 533 is connected with the water chiller 51, and the vent valve 531 is arranged at the connection position of the flexible air pipe 533 and the water chiller 51 and is used for controlling the air output quantity of the flexible air pipe 533; the lifting piece 532 is connected with the flexible air pipe 533 and drives the flexible air pipe 533 to reciprocate towards one side of the matched die forming unit 2, namely, after the matched die forming unit 2 rotates to a cooling station, the lifting piece 532 descends and extends the flexible air pipe 533 into the forming cavity 221 of the fixed half die 22, after the flexible air pipe 533 fills air into the forming cavity 221, the air is interfered by heat flow and workpiece factors to shake, so that the turbulent flow effect is achieved, and the workpiece is cooled to generate a contraction effect and is separated from the inner wall part of the fixed half die 22.

As shown in fig. 1, the station changing unit 6: the mould closing and forming unit 2 is driven to rotate in the circumferential direction, and the working positions of the mould closing and forming unit 2 are sequentially changed, so that the workpieces can sequentially realize the process operation steps of feeding, blow molding, cooling, demoulding and discharging along with the rotation of the mould closing and forming unit 2; the cooling circulation device 52 is fixed on the station switching unit 6 and synchronously rotates along with the matched mold forming unit 2, so that the matched mold forming unit 2 can realize independent cooling operation.

As shown in fig. 1, specifically: the station changing unit 6 includes: a work support table 61, a rotating table 62, and a rotating motor 63; the rotating table 62 is rotatably arranged on the working support table 61 through a rotating motor 63, and during actual operation, a rotating bearing is arranged between the rotating table 62 and the working support table 61, so that the working support table 61 is kept fixed while the rotating table 62 rotates; the mold clamping unit 2 is fixed to the rotary table 62.

As shown in fig. 1 and 8, the device further comprises: a blanking unit 7; the blanking unit 7 is arranged adjacent to the working support platform 61 and is positioned at the bottom of the die assembly forming unit 2 so as to receive the workpiece of the die assembly forming unit 2; the blanking unit 7 includes: a transport member 71 (which is a mechanical structure of a conveyor belt, and is prior art and therefore not described in detail herein) and a blanking assembly 72; the conveying piece 71 abuts against the working support platform 61, and a baffle plate 73 is arranged on the side wall of one end, close to the working support platform 61, of the conveying piece 71, so that the workpieces can smoothly fall onto the conveying piece 71; unloading subassembly 72 includes: a driving motor 721 (selecting a cylinder), a second expansion link 722 and a material shifting part 723; the driving motor 721 is fixed on the side wall of the conveying member 7, and the power output end of the driving motor 721 is connected with the second expansion link 722 so as to drive the second expansion link 722 to operate, so as to drive the material stirring member 723 to vertically lift and lower towards the mold closing and forming unit 2; the setting member 723 includes: the transverse rod 7231 fixedly connected with the second telescopic rod 722, the micro motor 7232 fixed on the transverse rod 7231 and the driving lever 7233 rotationally arranged on the transverse rod 7231 and driven by the micro motor 7232, the driving lever 7233 is of a fan-shaped structure, and the transverse rod 7231 is driven by the operation of the micro motor 7232 to rotate anticlockwise by 0-60 degrees mechanically, so that a workpiece can fall down smoothly.

As shown in fig. 2 to 6, the ejector driver 3: the cooling circulation device 52 is communicated with the demoulding driving device 3 to control the demoulding driving device 3 to drive the forming cavity 221 in the mould closing forming unit 2 to seal or leave a gap, namely when the cooling circulation device 52 is communicated with the demoulding driving device 3, the fixed half mould 22 approaches towards the fixed base 21 at the moment, and a gap is reserved between the fixed half moulds 22 so as to facilitate demoulding of workpieces; when the cooling circulation device 52 stops running, the demolding driving part 3 drives the fixed half mold 22 and the fixed seat 21 to reset, and in actual operation, the demolding driving part 3 is arranged in the cooling channel 222 communicated with one end of the discharge pipe 522 or at the bottom of the outlet end of the cooling channel 222 so as to ensure that the primary cooling effect of the cooling liquid and the fixed half mold 22 is carried out;

on the basis of the above technical solution, the demolding driving member 3 of the present invention includes the following two embodiments, specifically as follows:

the first embodiment is as follows:

as shown in fig. 2 to 5, the ejector driver 3 includes: a mounting block 31, a fixed block 32, and a movable member 33;

the mounting block 31 is fixedly connected with the fixed seat 21, the fixed block 32 is mounted on the fixed half-mold 22, and a drainage channel 321 communicated with the cooling channel 222 is formed in the fixed block; the partition plate 4 is arranged on the inner wall of the drainage channel 321, and the partition plate 4 is abutted against the inner walls of the front side and the rear side of the fixing block 32; and the partition plate 4 is positioned at one side close to the outlet end (opening at the top) of the drainage channel 321 on the fixed block 32;

the movable member 33 includes: a stopper 331, an elastic member 332, a link 333; the stopper 331 is slidably disposed in the drainage channel 321 through an elastic member 332 (i.e., a spring), and can move to abut against the partition plate 4 to divide the drainage channel 321 into three independent chambers, wherein one independent chamber is formed by slidably disposing the stopper 331 in the fixed block 32, and the elastic member 332 is disposed in the independent chamber to further prolong the service life of the elastic member 332; the end of the connecting rod 333 facing away from the elastic element 332 (extending leftward in the embodiment) vertically passes through the fixing block 32 and is fixedly connected to the mounting block 31, and in actual operation, two connecting rods 333 may be provided to improve driving stability;

the working principle is as follows: as shown in fig. 3-5, the demolding driving member 3 is in an initial state (as shown in fig. 4 and 5), and the stopper 331 abuts against the partition plate 4 and separates the inlet end (i.e., the opening at the bottom) and the outlet end (i.e., the opening at the top) of the drainage channel 321; as shown in fig. 3, when the cooling circulation device 52 is connected, the cooling fluid flows in through the flow-guiding channel 321, and the cooling fluid is in a random flowing state, when the cooling fluid fills the inlet end of the flow-guiding channel 321 and then exerts a pressing pressure on the stopper 331 (in this embodiment, the partition plate 4 sets the channel on the inlet end side of the flow-guiding channel 321 to be an inverted L-shaped structure so as to limit the flowing direction of the cooling fluid), the stopper 331 is forced to compress the elastic member 332 and move rightward, the inlet end of the flow-guiding channel 321 is connected to the outlet end, the cooling fluid flows out from the outlet end (the opening at the top) of the fixed block 32, and when the stopper 331 moves rightward, the connecting rod 333 is driven to gradually move rightward and accommodated in the fixed block 32, because the mounting block 31 is fixed on the fixed seat 21 to achieve effective fixation, the fixed block 32 is fixed on the fixed half 22, so that the fixed half 22 moves toward the fixed seat 21, i.e., the opposing stationary mold halves 22 are separated, thereby further assisting in demolding the workpiece; when the water chiller 51 stops operating, the cooling circulation device 52 stops operating and draws out the cooling liquid in the fixed half-mold 22, at this time, the spring is forced to drive the stop 331 to reset, part of the connecting rod 333 gradually withdraws from the fixed block 32 to the left, and drives the fixed half-mold 22 to reset.

Example two:

as shown in fig. 6, unlike embodiment 1, the present embodiment is further provided with a flow guide plate 41; the drainage plate 41 is accommodated in the drainage channel 321 of the fixed block 32, similarly, the drainage plate 41 abuts against the inner walls of the front side and the rear side of the fixed block 32, and the drainage plate 41 is arranged opposite to the partition plate 4, namely, the drainage plate 41 is arranged at the inlet end of the drainage channel 321, and a gap is reserved between the drainage plate 41 and the inlet end of the drainage channel 321, so that the cooling liquid can be conveniently poured in; when the stop block 331 is abutted against both the flow guide plate 41 and the partition plate 4, the acting force of the cooling liquid in the flow guide channel 321 on the stop block 331 is completely opposite to the acting force of the elastic member 332 on the stop block 331, namely in a natural state, under the acting force of the elastic member 332, the stop block 331 is abutted against both the flow guide plate 41 and the partition plate 4, at the moment, the cooling liquid flows into a circulation path after flowing into the flow guide channel 321, the final flowing action direction of the cooling liquid is horizontally arranged rightwards, so that the acting force of the cooling liquid is opposite to that of the elastic member 332, and the cooling liquid can effectively act and impact on the stop block 331, so that the flow guide channel 321 is communicated; since the operation principle is substantially similar to that of the first embodiment, the detailed description is omitted here.

The main working principle of the invention is as follows:

the driving assembly 23 drives the opposite fixed half moulds 22 to abut against each other, and then the blow molding unit 1 drops the material into the fixed half moulds 22 and performs blow molding operation; after the blow molding is finished, the work piece is rotated to the cooling station by the station conversion unit 6, at the moment, the work piece in the fixed half mold 22 is subjected to air cooling operation by the turbulent flow device 53, and the work piece is cooled and contracted;

the cooling circulation components run synchronously, the water chiller 51 inputs cooling liquid into the cooling channel 222, the demolding driving part 3 runs and drives the opposite fixed half molds 22 to separate, at the moment, the workpiece is completely separated from the fixed half molds 22, the cooling unit 5 stops running, the workpiece is transferred to a product taking-out station by the station switching unit 6, at the moment, the driving component 23 drives the mold closing forming unit 2 to separate, the workpiece is knocked down onto the conveying part 71 through the deflector rod 7233 and is conveyed to the next station through the conveying part 71.

In actual operation, the PLC processor is selected to control each workpiece in a timing mode, so that accurate control is realized.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.