Electric mold closing frame for blow molding

Abstract

The invention relates to the field of blow molding machine mold closing frames, and discloses a blow molding electric mold closing frame which comprises mold closing mechanisms, the mold closing mechanisms are fixedly installed on the two sides of a blowing mechanism of a blow molding machine, and each mold closing mechanism comprises a front mold plate, a middle mold plate and a rear mold plate; one end of the front mold plate is connected with a mold plate shaft, and the middle mold plate and the rear mold plate are installed on the outer wall of the mold plate shaft in a sliding mode. The middle mold plate can be driven by the driving device to be close to or away from the rear mold plate. The front mold plate and the rear mold plate are fixed together under the action of the mold plate shaft, the middle mold plate slides on the mold plate shaft, the lead screw is driven to rotate through the transformation ratio of the synchronous belt and the synchronous wheel under the rotation of the servo motor, and the lead screw sleeve is fixed to the middle mold plate and moves forwards under the action of the lead screw to achieve the mold closing action. A mold closing spring is installed between the lead screw sleeve and the middle mold plate, and mold clamping force is continuously generated through the mold closing spring in the actual production process.

Description

Technical Field

[0001] The invention relates to the technical field of blow molding machine mold clamping frames, in particular to a blow molding electric mold clamping frame. Background Art

[0002] Blow molding machine is a plastic processing machine, which uses air pressure to blow up the plastic preform and stick it to the inner wall of the mold. After cooling and demolding, various hollow products are obtained. The plastic is melted and quantitatively extruded in the screw extruder, and then formed through the die, and then cooled by air ring, and then pulled by the traction machine at a certain speed, and the winding machine winds it into a roll. Blow molding machine sales channel technology produces and sells plastic machinery, blow molding machine, full-automatic blow molding machine, barrel blowing machine, etc. It adopts Japanese PLC automatic control and CNC, which is accurate, simple and convenient. It can make 1L--20L, 25L--200L, 200L--1200 civilian barrels, chemical food medicine, etc. Most of the blow molding machines are still two-step blow molding machines, that is, the plastic raw materials need to be made into bottle blanks first, and then blown. Nowadays, environmentally friendly plastics are generally used; The mold clamping mechanism in the prior art blow molding machine usually uses a cylinder to achieve mold clamping, which has the disadvantages of high failure rate and environmental pollution. Summary of the invention

[0003] The present invention provides the following technical solutions: A blow molding electric mold clamping frame, comprising a mold clamping mechanism, the mold clamping mechanism is fixedly mounted on both sides of a blowing mechanism of a blow molding machine, the mold clamping mechanism comprises a front template, a middle template and a rear template; One end of the front template is connected to a template shaft, and the middle template and the rear template are slidably mounted on the outer wall of the template shaft; The middle template can be driven by the driving device to approach or move away from the rear template.

[0004] Preferably, a servo motor is fixedly installed above the front template, a lead screw is installed in the middle of the front template, one end of the lead screw is rotatably connected to the middle of the front template, one end of the lead screw and the output end of the servo motor are both connected to synchronous wheels, and the two synchronous wheels are connected by a synchronous belt transmission.

[0005] Preferably, one end of the middle template is connected to a lead screw sleeve, one end of the lead screw sleeve is fixedly connected to the middle template via a mold clamping spring, and the outside of the lead screw sleeve is threadedly connected to the lead screw; Through the action of the template shaft, the front template and the rear template are fixed together, and the middle template slides on the template shaft. The lead screw is driven to rotate through the transformation ratio of the synchronous belt and the synchronous wheel under the rotation of the servo motor. The lead screw sleeve is fixed on the middle template and moves forward under the action of the lead screw to realize the mold closing action. A mold closing spring is installed between the lead screw sleeve and the middle template. In actual production, the mold locking force is continuously generated through the mold closing spring.

[0006] Preferably, the blow molding machine includes a barrel, a die mouth and a base, a screw is installed inside the barrel, the screw is rotatably connected to the inside of the barrel, a drive motor is installed at one end of the screw, the barrel is connected to the outer wall of the die mouth, the barrel is communicated with the inside of the die mouth, an extruder frame is installed on the top of the base, the bottom of the extruder frame and the top of the base are slidably installed through an electric slide rail, the barrel is fixedly installed on the top of the extruder frame, and a guardrail is also connected around the top of the extruder frame.

[0007] Preferably, three screw barrels are provided, the ends of the three screw barrels are connected to the outer wall of the die opening of the machine head and are connected to the inside of the die opening of the machine head. A cast aluminum heating ring is also installed on the outside of the screw barrel, and the cast aluminum heating ring is used to heat the plastic raw material inside the screw barrel.

[0008] Preferably, a clamping mechanism is provided below the die mouth of the machine head, and the clamping mechanism includes a guide rail, a sliding seat is slidably mounted on the guide rail, two manipulators are installed at the bottom of the sliding seat, the two manipulators are connected to the side wall of the sliding seat through a clamping cylinder, one end of the two manipulators is connected to a mechanical arm, and the two mechanical arms are close to each other for clamping the cylindrical material tube.

[0009] Preferably, the blowing mechanism comprises a fixed block, a movable block is arranged above the fixed block, a blowing nozzle is connected to the top of the movable block, and the top of the blowing nozzle corresponds to the bottom of the cylindrical material tube.

[0010] Preferably, a cutting mechanism is also provided below the die mouth of the machine head, and the cutting mechanism includes a fixed frame, the fixed frame is fixedly mounted on the base, one end of the fixed frame is connected to a limiting rod, one end of the limiting rod is connected to a first cutting knife, a second cutting knife is slidably mounted on the middle part of the limiting rod, a linear motor is connected between the second cutting knife and the fixed frame, and the linear motor can drive the second cutting knife to approach or move away from the first cutting knife.

[0011] Compared with the prior art, the present invention provides a blow molding electric mold clamping frame, which has the following beneficial effects: 1. The present invention fixes the front template and the rear template together under the action of the template shaft, and the middle template slides on the template shaft. The lead screw is driven to rotate through the transformation ratio of the synchronous belt and the synchronous wheel under the rotation of the servo motor. The lead screw sleeve is fixed on the middle template and moves forward under the action of the lead screw to realize the mold closing action. A mold closing spring is installed between the lead screw sleeve and the middle template. In actual production, the mold locking force is continuously generated by the mold closing spring.

[0012] 2. Compared with the current situation that the traditional mold clamping frame realizes mold clamping by using oil cylinder and air cylinder, the present invention realizes energy saving and environmental protection by using servo motor and lead screw, and reduces the failure rate.

[0013] 3. The present invention installs a mold clamping spring between the middle mold plate and the lead screw nut, so that the mold clamping spring can continuously and smoothly provide a clamping force, thereby providing a guarantee for product production.

[0014] 4. The mold clamping spring provides the clamping force after the servo motor of the present invention moves into position. The elastic deformation soft connection is used to better protect the servo motor from overloading, and the mold is squeezed by the squeezed spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of the clamping mechanism of the present invention; Figure 2 is a cross-sectional view of the clamping mechanism of the present invention; Figure 3 A three-dimensional diagram of a blow molding machine of the present invention; Figure 4 It is a front view of the present invention; Figure 5 It is a side view of the present invention; Figure 6 A top view of the present invention; Figure 7 is a three-dimensional diagram of the clamping mechanism of the present invention; Figure 8 A three-dimensional diagram of the blowing mechanism of the present invention; Fig. 9 It is a three-dimensional diagram of the cutting mechanism of the present invention.

[0016] In the figure: 1. Blow molding machine; 101. Base; 102. Extruder frame; 103. Guardrail; 104. Driving motor; 105. Screw barrel; 106. Feed hopper; 107. Die mouth of die head; 108. Limiting column; 2. Mold clamping mechanism; 201. Front template; 202. Middle template; 203. Rear template; 204. Servo motor; 205. Synchronous wheel; 206. Synchronous belt; 207. Screw; 208. Screw sleeve; 2 09. mold closing spring; 210. template shaft; 3. clamping mechanism; 301. guide rail; 302. sliding seat; 303. manipulator; 304. clamping cylinder; 305. robot arm; 4. blowing mechanism; 401. fixed block; 402. movable block; 403. blowing nozzle; 6. cutting mechanism; 601. fixed frame; 602. first cutting knife; 603. linear motor; 604. second cutting knife; 605. limit rod. DETAILED DESCRIPTION

[0017] See also Figure 1-9, this embodiment provides a blow molding electric mold clamping frame, including a mold clamping mechanism 2, the mold clamping mechanism 2 is fixedly installed on both sides of the blowing mechanism 4 of the blow molding machine 1, and the mold clamping mechanism 2 includes a front template 201, a middle template 202 and a rear template 203; One end of the front template 201 is connected to a template shaft 210, and the middle template 202 and the rear template 203 are slidably mounted on the outer wall of the template shaft 210; The middle template 202 can be moved closer to or farther from the rear template 203 under the drive of the driving device.

[0018] As a possible embodiment, a servo motor 204 is fixedly installed above the front template 201, a lead screw 207 is installed in the middle of the front template 201, one end of the lead screw 207 is rotatably connected to the middle of the front template 201, one end of the lead screw 207 and the output end of the servo motor 204 are both connected to a synchronous wheel 205, and the two synchronous wheels 205 are connected through a synchronous belt 206.

[0019] As a possible embodiment, one end of the middle template 202 is connected to a screw sleeve 208, one end of the screw sleeve 208 is fixedly connected to the middle template 202 through a mold clamping spring 209, the outside of the screw sleeve 208 is threadedly connected to the screw 207, and a movable gap is left between the screw sleeve 208 and the middle template 202; Through the action of the template shaft 210, the front template 201 and the rear template 203 are fixed together, and the middle template 202 slides on the template shaft 210. When the servo motor 204 rotates, the lead screw 207 is driven to rotate through the transformation ratio of the synchronous belt 206 and the synchronous wheel 205. The lead screw sleeve 208 is fixed on the middle template 202 and moves forward under the action of the lead screw 207 to realize the mold closing action. A mold closing spring 209 is installed between the lead screw sleeve 208 and the middle template 202. In actual production, the mold closing force is continuously generated by the mold closing spring 209.

[0020] As a possible embodiment, the blow molding machine 1 includes a screw barrel 105, a head die 107 and a base 101, a screw is installed inside the screw barrel 105, the screw is rotatably connected to the inside of the screw barrel 105, a drive motor 104 is installed at one end of the screw, the screw barrel 105 is connected to the outer wall of the head die 107, the screw barrel 105 is connected to the inside of the head die 107, an extruder frame 102 is installed on the top of the base 101, the bottom of the extruder frame 102 and the top of the base 101 are slidably installed through an electric slide rail, the screw barrel 105 is fixedly installed on the top of the extruder frame 102, and a guardrail 103 is also connected around the top of the extruder frame 102.

[0021] As a possible embodiment, three screw barrels 105 are provided, and a feed hopper 106 is connected to the top of the screw barrel 105. The ends of the three screw barrels 105 are connected to the outer wall of the head die 107 and are connected to the inside of the head die 107. A cast aluminum heating ring is also installed on the outside of the screw barrel 105, and the cast aluminum heating ring is used to heat the plastic raw material inside the screw barrel 105.

[0022] As a possible embodiment, a clamping mechanism 3 is arranged below the head die 107, and the clamping mechanism 3 includes a guide rail 301, and a sliding seat 302 is slidably installed on the guide rail 301, and two manipulators 303 are installed at the bottom of the sliding seat 302, and the two manipulators 303 are connected to the side wall of the sliding seat 302 through a clamping cylinder 304, and one end of the two manipulators 303 is connected to a mechanical arm 305, and the two mechanical arms 305 are close to each other for clamping the cylindrical material tube.

[0023] As a possible embodiment, the blowing mechanism 4 includes a fixed block 401, a movable block 402 is arranged above the fixed block 401, a blowing nozzle 403 is connected to the top of the movable block 402, and the top of the blowing nozzle 403 corresponds to the bottom of the cylindrical material tube.

[0024] As a possible embodiment, a cutting mechanism 6 is also provided below the head die 107, and the cutting mechanism 6 includes a fixed frame 601, and the fixed frame 601 is fixedly mounted on the base 101, one end of the fixed frame 601 is connected to a limiting rod 605, one end of the limiting rod 605 is connected to a first cutting knife 602, a second cutting knife 604 is slidably mounted in the middle of the limiting rod 605, a linear motor 603 is connected between the second cutting knife 604 and the fixed frame 601, and the linear motor 603 can drive the second cutting knife 604 to approach or move away from the first cutting knife 602, and two limiting columns 108 are connected to the end of the base 101, and the distance between the two limiting columns 108 is the moving path of the right station and the left station of the extruder frame 102.

Claims

1. A blow molding electric mold clamping frame, comprising a mold clamping mechanism (2), wherein the mold clamping mechanism (2) is fixedly mounted on both sides of a blowing mechanism (4) of a blow molding machine (1), characterized in that: The mold clamping mechanism (2) comprises a front mold plate (201), a middle mold plate (202) and a rear mold plate (203); One end of the front template (201) is connected to a template shaft (210), and the middle template (202) and the rear template (203) are slidably mounted on the outer wall of the template shaft (210); The middle template (202) can be moved closer to or farther away from the rear template (203) under the drive of the driving device.

2. The electric mold clamping frame for blow molding according to claim 1, characterized in that: A servo motor (204) is fixedly mounted above the front template (201), a lead screw (207) is mounted in the middle of the front template (201), one end of the lead screw (207) is rotatably connected to the middle of the front template (201), one end of the lead screw (207) and the output end of the servo motor (204) are both connected to a synchronous wheel (205), and the two synchronous wheels (205) are connected via a synchronous belt (206).

3. The electric mold clamping frame for blow molding according to claim 2, characterized in that: One end of the middle mold plate (202) is connected to a lead screw sleeve (208), one end of the lead screw sleeve (208) is fixedly connected to the middle mold plate (202) via a mold clamping spring (209), and the outside of the lead screw sleeve (208) is threadedly connected to the lead screw (207).

4. The electric mold clamping frame for blow molding according to claim 3, characterized in that: The blow molding machine (1) comprises a screw barrel (105), a die mouth (107) and a base (101); a screw is installed inside the screw barrel (105), the screw is rotatably connected to the inside of the screw barrel (105), a drive motor (104) is installed at one end of the screw, the screw barrel (105) is connected to the outer wall of the die mouth (107), the screw barrel (105) is communicated with the inside of the die mouth (107), an extruder frame (102) is installed on the top of the base (101), the bottom of the extruder frame (102) and the top of the base (101) are slidably installed via an electric slide rail, the screw barrel (105) is fixedly installed on the top of the extruder frame (102), and a guardrail (103) is also connected around the top of the extruder frame (102).

5. The electric mold clamping frame for blow molding according to claim 4, characterized in that: Three screw barrels (105) are provided, and the ends of the three screw barrels (105) are connected to the outer wall of the die opening (107) of the die head and are communicated with the interior of the die opening (107). A cast aluminum heating ring is also installed outside the screw barrel (105), and the cast aluminum heating ring is used to heat the plastic raw material inside the screw barrel (105).

6. The electric mold clamping frame for blow molding according to claim 5, characterized in that: A clamping mechanism (3) is arranged below the die mouth (107) of the die head. The clamping mechanism (3) comprises a guide rail (301). A sliding seat (302) is slidably mounted on the guide rail (301). Two manipulators (303) are mounted at the bottom of the sliding seat (302). The two manipulators (303) are connected to the side wall of the sliding seat (302) via a clamping cylinder (304). One end of the two manipulators (303) is connected to a manipulator arm (305). The two manipulator arms (305) are close to each other and are used to clamp the cylindrical material tube.

7. The electric mold clamping frame for blow molding according to claim 6, characterized in that: The blowing mechanism (4) comprises a fixed block (401), a movable block (402) is arranged above the fixed block (401), a blowing nozzle (403) is connected to the top of the movable block (402), and the top of the blowing nozzle (403) corresponds to the bottom of the cylindrical material tube.

8. The electric mold clamping frame for blow molding according to claim 7, characterized in that: A cutting mechanism (6) is also provided below the die mouth (107) of the machine head. The cutting mechanism (6) comprises a fixing frame (601). The fixing frame (601) is fixedly mounted on the base (101). One end of the fixing frame (601) is connected to a limiting rod (605). One end of the limiting rod (605) is connected to a first cutting knife (602). A second cutting knife (604) is slidably mounted in the middle of the limiting rod (605). A linear motor (603) is connected between the second cutting knife (604) and the fixing frame (601). The linear motor (603) can drive the second cutting knife (604) to approach or move away from the first cutting knife (602).

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