Continuous cooling and shaping device for extrusion blow molding machines

Abstract

This utility model discloses a continuous cooling and shaping device for an extrusion blow molding machine, comprising: a mounting frame; a lifting platform mounted on the mounting frame; a transition pad rotatably mounted on the lifting platform; a support platform mounted on the mounting frame; several lower shaping plates mounted on the support platform; several upper shaping plates mounted on the mounting frame; air nozzles on the upper shaping plates; air nozzles having air inlets and air outlets; the air inlets being connected to a cooling air source via air pipes; a sliding table mounted slidably on the mounting frame; a push plate slidably mounted at both ends of the sliding table; a connecting plate on the push plate; and several clamping molds evenly spaced from left to right on the side wall of the connecting plate facing the support platform, with each clamping mold corresponding to one of the lower shaping plates and the transition pad. The advantage of this utility model is that it can automatically and continuously cool and shape blow-molded products.

Description

Technical Field

[0001] This utility model relates to the field of extrusion blow molding machines, and more particularly to a continuous cooling and shaping device for extrusion blow molding machines. Background Technology

[0002] After blow molding products using an extrusion blow molding machine, the blow molded products need to be cooled and shaped. However, the cooling and shaping steps currently available on the market cannot be continuously automated with the extrusion blow molding steps. The blow molded products need to be removed by a robotic arm and then manually placed one by one onto a cooling device for cooling. This is not only inefficient, but the temperature of the blow molded products is also high, which can easily burn workers. Utility Model Content

[0003] The purpose of this invention is to provide a continuous cooling and shaping device for an extrusion blow molding machine, which can automatically and continuously cool and shape blow-molded products.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a continuous cooling and shaping device for an extrusion blow molding machine, comprising: a mounting frame; a lifting platform movably mounted on the right end of the mounting frame; a transition pad rotatably mounted on the lifting platform; a support platform movably mounted on the mounting frame located on the left side of the lifting platform; a plurality of lower shaping plates equidistantly mounted on the support platform from left to right; bottom grooves conforming to the bottom wall of the blow-molded product are provided on both the transition pad and the lower shaping plates; the distance between the transition pad and the adjacent lower shaping plate is equal to the distance between two adjacent lower shaping plates; and a plurality of upper shaping plates movably mounted on the mounting frame. The upper and lower shaping plates are aligned vertically. The upper shaping plate has a top groove that fits the top wall of the blow-molded product. The upper shaping plate also has mounting holes that communicate with the top groove. An air nozzle is sealed in the mounting hole. The air nozzle has an air inlet and an air outlet. The air inlet is connected to a cooling air source through an air pipe. A slide table is slidably mounted on the mounting frame. A push plate is slidably mounted at the front and rear ends of the slide table. A connecting plate is mounted on the push plate. Several clamping molds are evenly spaced from left to right on the side wall of the connecting plate facing the support platform. The clamping molds on the connecting plate correspond one-to-one with the lower shaping plate and the transition pad.

[0005] Furthermore, in the aforementioned continuous cooling and shaping device for an extrusion blow molding machine, water-cooling channels are provided in the transition plate, lower shaping plate, upper shaping plate, and mold. The water inlet of the water-cooling channel is connected to the cooling water source through an inlet pipe, and the water outlet of the water-cooling channel is connected to the recycling tank through an outlet pipe.

[0006] Furthermore, in the aforementioned continuous cooling and shaping device for an extrusion blow molding machine, an electric cylinder base is provided on the mounting frame, a lifting electric cylinder is vertically provided on the electric cylinder base, four first guide sleeves are provided around the electric cylinder base, a lifting platform is connected to the piston rod of the lifting electric cylinder, four first guide shafts are provided around the lifting platform, the four first guide shafts are slidably provided in the four first guide sleeves respectively, a rotary cylinder is provided on the lifting platform, and a transition pad is connected to the rotary shaft on the rotary cylinder.

[0007] Furthermore, in the aforementioned continuous cooling and shaping device for an extrusion blow molding machine, the left and right ends of the support platform are respectively connected to the piston rod of the first lifting cylinder. The first lifting cylinder is fixed on the mounting frame through the first cylinder seat. Two second guide sleeves are provided on the first cylinder seat. Two second guide shafts are provided on both the left and right ends of the support platform. The second guide shafts on the support platform are slidably disposed in the second guide sleeves on the same side.

[0008] Furthermore, in the aforementioned continuous cooling and shaping device for an extrusion blow molding machine, the upper shaping plate is connected to the piston rod of the second lifting cylinder, the second lifting cylinder is fixed on the mounting frame via a second cylinder seat, four third guide sleeves are provided around the second cylinder seat, and four third guide shafts are provided around the upper shaping plate, with the four third guide shafts slidably disposed in the four third guide sleeves respectively.

[0009] Furthermore, in the aforementioned continuous cooling and shaping device for an extrusion blow molding machine, a guide rail frame is provided on the mounting frame, a first linear slide rail is provided at both the front and rear ends of the guide rail frame, a rack plate parallel to the first linear slide rail is provided in the middle of the guide rail frame, two first sliders are provided at both the front and rear ends of the bottom wall of the slide table, the two first sliders on the same side of the slide table are slidably engaged on the first linear slide rail on the same side, a servo reduction motor is provided on the slide table, a gear is provided on the output shaft of the servo reduction motor, the gear meshes with the rack plate, a left limit block and a right limit block are provided at the left and right ends of the guide rail frame, and a clearance hole wider and higher than the servo reduction motor is provided on the push plate.

[0010] Furthermore, in the aforementioned continuous cooling and shaping device for an extrusion blow molding machine, two push plates are symmetrically slidably mounted on the top wall of the slide table with a servo reduction motor as the center. A second linear slide rail is provided on the left and right sides of the top wall of the slide table, and two second sliders are provided at the left and right ends of the two push plates. The two second sliders on the same side are slidably locked on the second linear slide rail on the same side. A push-pull cylinder is provided at the front and rear ends of the top wall of the slide table. The piston rod of the push-pull cylinder is connected to the push plate on the same side, and the push-pull cylinder is located in the clearance hole of the push plate.

[0011] The advantages of this invention are as follows: After the robotic arm places the blow-molded product on the transition pad, the transition pad can rotate to adjust the position of the blow-molded product so that its placement matches the lower shaping plate. Then, the blow-molded product on the transition pad is transported to the lower shaping plate by the mold clamp. The upper shaping plate is then pressed down on the blow-molded product, and air is blown into the blow-molded product through the air nozzles on the upper shaping plate for air cooling, thereby achieving automatic and continuous cooling and improving work efficiency. Water cooling channels are provided in the mold clamp, lower shaping plate, upper shaping plate, and transition pad. This not only assists in cooling and accelerates the cooling efficiency, but also prevents the high-temperature blow-molded product from sticking to the mold clamp, transition pad, or lower shaping plate during the conveying process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the continuous cooling and shaping device for an extrusion blow molding machine according to the present invention.

[0013] Figure 2 yes Figure 1 A schematic diagram of the partial connection structure between the intermediate transition pad and the mounting bracket.

[0014] Figure 3 yes Figure 1 A schematic diagram of the partial connection structure between the lower shaping plate and the mounting bracket.

[0015] Figure 4 yes Figure 1 A schematic diagram of the partial connection structure between the upper and middle shaping plates and the mounting bracket.

[0016] Figure 5 yes Figure 4 A schematic diagram of the upper and middle shaping plates.

[0017] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure.

[0018] Figure 7 yes Figure 1 A schematic diagram of the partial connection structure between the central mold and the mounting frame.

[0019] Figure 8 yes Figure 7 A structural diagram from another viewpoint. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and preferred embodiments.

[0021] like Figures 1 to 8As shown, the continuous cooling and shaping device for an extrusion blow molding machine of this utility model includes: a mounting frame 1; an electric cylinder base 21 is provided at the right end of the mounting frame 1; a lifting electric cylinder 22 is vertically arranged on the electric cylinder base 21; four first guide sleeves 23 are arranged around the electric cylinder base 21; a lifting platform 24 is connected to the piston rod of the lifting electric cylinder 22; four first guide shafts 25 are arranged around the lifting platform 24; the four first guide shafts 25 are slidably arranged in the four first guide sleeves 23 respectively; and a rotary cylinder is arranged on the lifting platform 24. 26. A transition pad 2 is provided on the rotating shaft of the rotary cylinder 26. Two first cylinder seats 31 are provided on the mounting bracket 1 located on the left side of the lifting platform 24. A first lifting cylinder 32 and two second guide sleeves 33 are vertically arranged on each of the two first cylinder seats 31. A support platform 34 is connected between the piston rods of the two first lifting cylinders 32. Two second guide shafts 35 are provided at both ends of the support platform 34. The second guide shafts 35 on the support platform 34 are slidably arranged in the second guide sleeves 33 on the same side. On the support platform 34, from left to right... Several lower shaping plates 3 are arranged at equal intervals on the right. Both the transition pad 2 and the lower shaping plates 3 have bottom grooves that fit against the bottom wall of the blow-molded product. The distance between the transition pad 2 and the adjacent lower shaping plate 3 is equal to the distance between two adjacent lower shaping plates 3. Several second cylinder seats 41 are arranged on the top of the mounting frame 1. A second lifting cylinder 42 and four third guide sleeves 43 are vertically arranged on the second cylinder seats 41. The four third guide sleeves 43 are arranged around the second cylinder seats 41, and on the piston rod of the second lifting cylinder 42... The upper shaping plate 4 is connected, and four third guide shafts 44 are arranged around the upper shaping plate 4. The four third guide shafts 44 are slidably arranged in four third guide sleeves 43. The upper shaping plate 4 and the lower shaping plate 3 are aligned vertically. The upper shaping plate 4 is provided with a top groove that fits with the top wall of the blow-molded product. The upper shaping plate 4 is provided with a mounting hole that communicates with the top groove. An air nozzle 45 is sealed in the mounting hole. The air nozzle 45 is provided with an air inlet 451 and an air outlet 452. The air inlet 451 is connected to a cooling air source through an air pipe.

[0022] A guide rail frame 51 is provided on the mounting bracket 1. A first linear slide rail 511 is provided at both the front and rear ends of the guide rail frame 51. A rack plate 512 parallel to the first linear slide rail 511 is provided in the middle of the guide rail frame 51. Two first sliders 521 are slidably engaged on the first linear slide rail 511. A slide table 52 is provided between the four first sliders 521. A servo reduction motor 522 is provided on the slide table 52. A gear 523 is provided on the output shaft of the servo reduction motor 522. The gear 523 meshes with the rack plate 512. A left limit block 513 and a right limit block 514 are provided at the left and right ends of the guide rail frame 51, respectively. Two sliding blocks are symmetrically arranged on the top wall of the slide table 52, centered on the servo reduction motor 522. Each push plate 53 has a clearance hole 531 that is wider and higher than the servo reducer motor 522. Two second sliders 532 are respectively provided at the left and right ends of the two push plates 53. The two second sliders 532 on the same side are slidably locked on the second linear slide rail 524 on the same side. A push-pull cylinder 525 is respectively provided at the front and rear ends of the top wall of the slide table 52. The piston rod of the push-pull cylinder 525 is connected to the push plate 53 on the same side. The push-pull cylinder 525 is located in the clearance hole 531 of the push plate 53. A connecting plate 54 is provided on the push plate 53. Several clamping molds 5 are equally spaced from left to right on the side wall of the connecting plate 54 facing the support table 34. The clamping molds 5 on the connecting plate 54 correspond one-to-one with the lower shaping plate 3 and the transition pad plate 2.

[0023] Water cooling channels 6 are provided in the transition pad 2, lower shaping plate 3, upper shaping plate 4 and mold 5. The water inlet end of the water cooling channel 6 is connected to the cooling water source through the water inlet pipe, and the water outlet end of the water cooling channel 6 is connected to the recycling tank through the water outlet pipe. The structure of the water cooling channels 6 in the transition pad 2, lower shaping plate 3, upper shaping plate 4 and mold 5 is the same.

[0024] During operation, the lifting cylinder 22 drives the lifting platform 24 to rise to a position where the top wall of the transition pad 2 is close to the bottom wall of the clamping mold 5. The robotic arm transfers the blow-molded product formed in the extrusion blow molding machine onto the transition pad 2. The bottom wall of the blow-molded product fits into the bottom groove of the transition pad 2. Then, the rotary cylinder 26 drives the transition pad 2 and the blow-molded product on the transition pad 2 to rotate together. When the blow-molded product rotates into position, the two push-pull cylinders 525 drive their corresponding connecting plates 54 to engage, so that the two clamping molds 5 aligned with the transition pad 2 hold the blow-molded product on the transition pad 2 to position and fix the blow-molded product. The lifting cylinder 22 drives the lifting platform 24 to descend and detach from the blow-molded product, and then the servo reduction motor 522 is started. The gear 523 on the servo reducer motor 522 drives the slide table 52 and the push plate 53 and connecting plate 54 on the slide table 52 to move to the left through gear transmission with the rack plate 512. The mating mold 5 carries the blow-molded product to the upper shaping plate 3 adjacent to the transition pad 2. The two first lifting cylinders 32 drive the support platform 34 to rise. When the lower shaping plate 3 adjacent to the transition pad 2 on the right end of the support platform 34 receives the blow-molded product, the two mating molds 5 open and detach from the blow-molded product. The blow-molded product is placed into the bottom groove of the lower shaping plate 3. Then the support platform 34 descends, the two connecting plates 54 reset to the right, the transition pad 2 resets upward, and the robot places the second blow-molded product on the transition pad 2. Then the support platform 34... Upon resetting, the two connecting plates 54 align, and the two clamping molds 5 aligned with the transition plate 2 hold the blow-molded product on the transition pad 2. Meanwhile, the two clamping molds 5 aligned with the lower shaping plate 3 containing the blow-molded product hold the blow-molded product on that lower shaping plate 3. Then, the support platform 34 and the transition pad 2 descend, the two connecting plates 54 move to the left, and the two blow-molded products move to the left simultaneously. The two blow-molded products move above the support platform 34 and align with the two lower shaping plates 3. The support platform 34 rises, and the two blow-molded products are placed into the two lower shaping plates 3. This process continues. During this process, coolant continuously circulates in the water-cooling channels 6 of the clamping molds 5, transition pad 2, and lower shaping plates 3, thus providing auxiliary cooling for the blow-molded products. To prevent blow-molded products from sticking to the clamping mold 5, transition pad 2, or lower shaping plate 3 during transport, after all the lower shaping plates 3 on the support platform 34 are filled with blow-molded products, the clamping mold 5 continues to hold the blow-molded products. At this time, the clamping mold 5 located at the leftmost end of the connecting plate 54 does not contact any blow-molded products. The upper shaping plate 4, driven by the second lifting cylinder 42, abuts against the top wall of the blow-molded products, and the air nozzle 45 on the upper shaping plate 4 extends into the blow-molded products. Cooling gas enters the blow-molded products through the air inlet 451 on the air nozzle 45 to cool the blow-molded products, and then is discharged out through the air outlet 452. During air cooling, coolant also circulates continuously in the water cooling channel 6 in the upper shaping plate 4 for auxiliary cooling.

[0025] The number of lower shaping plates 3 and upper shaping plates 4 on the support platform 34 is set according to the number of blow-molded products per batch of the extrusion blow molding machine. Since the extrusion blow molding machine can only produce three blow-molded products per batch, in this embodiment, three lower shaping plates 3, three upper shaping plates 4, and four clamping molds 5 are provided on the support platform 34. After the three blow-molded products in each batch are cooled, the three upper shaping plates 4 rise and reset, and the two connecting plates 54 open and move to the right, so that the four clamping molds 5 on the connecting plates 54 are aligned with the three lower shaping plates 3 and the transition pad plate 2, respectively. The three blow-molded products on the three lower shaping plates 3 are repositioned and held together. At this time, the rightmost clamping mold 5 of the connecting plate 54 is not in contact with any blow-molded products. Then, the support platform 34 is lowered, and the connecting plate 54 moves to the left. The blow-molded product on the leftmost lower shaping plate 3 will be removed from the mounting frame 1 under the action of the leftmost clamping mold 5. At this time, the support platform 34 is raised, so that the other two blow-molded products are placed back in the two lower shaping plates 3 on the left. The two connecting plates 54 are opened, and the blow-molded products outside the mounting frame 1 will fall off. The two connecting plates 54 are reset to the right. The above actions are repeated until the remaining two blow-molded products are removed from the mounting frame 1.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A continuous cooling and setting device for an extrusion blow molding machine, comprising: The mounting frame is characterized by: a lifting platform being raised and lowered at the right end of the mounting frame; a transition pad being rotatably mounted on the lifting platform; a support platform being raised and lowered on the mounting frame located to the left of the lifting platform; and several lower shaping plates being evenly spaced from left to right on the support platform. Both the transition pad and the lower shaping plates are provided with bottom grooves that conform to the bottom wall of the blow-molded product. The distance between the transition pad and the adjacent lower shaping plate is equal to the distance between two adjacent lower shaping plates. Several upper shaping plates are raised and lowered on the mounting frame, and the upper shaping plates are aligned vertically with the lower shaping plates. The mold plate has a top groove that fits into the top wall of the blow-molded product. The upper mold plate has a mounting hole that communicates with the top groove. An air nozzle is sealed in the mounting hole. The air nozzle has an air inlet and an air outlet. The air inlet is connected to a cooling air source through an air pipe. A slide table is slidably mounted on the mounting frame. A push plate is slidably mounted at the front and rear ends of the slide table. A connecting plate is mounted on the push plate. Several clamping molds are evenly spaced from left to right on the side wall of the connecting plate facing the support platform. The clamping molds on the connecting plate correspond one-to-one with the lower mold plate and the transition pad.

2. The continuous cooling and shaping device for an extrusion blow molding machine according to claim 1, characterized in that: Water-cooling channels are provided in the transition pad, lower shaping plate, upper shaping plate and mold. The water inlet of the water-cooling channel is connected to the cooling water source through the water inlet pipe, and the water outlet of the water-cooling channel is connected to the recycling tank through the water outlet pipe.

3. The continuous cooling and shaping device for an extrusion blow molding machine according to claim 1, characterized in that: An electric cylinder base is installed on the mounting frame, and a lifting electric cylinder is vertically installed on the electric cylinder base. Four first guide sleeves are installed around the electric cylinder base. The lifting platform is connected to the piston rod of the lifting electric cylinder. Four first guide shafts are installed around the lifting platform, and the four first guide shafts are slidably installed in the four first guide sleeves respectively. A rotary cylinder is installed on the lifting platform, and a transition pad is connected to the rotary shaft on the rotary cylinder.

4. The continuous cooling and shaping device for an extrusion blow molding machine according to claim 1, characterized in that: The left and right ends of the support are connected to the piston rod of the first lifting cylinder, which is fixed on the mounting frame by the first cylinder seat. Two second guide sleeves are provided on the first cylinder seat, and two second guide shafts are provided on both the left and right ends of the support. The second guide shafts on the support are slidably disposed in the second guide sleeves on the same side.

5. The continuous cooling and shaping device for an extrusion blow molding machine according to claim 1, characterized in that: The upper shaping plate is connected to the piston rod of the second lifting cylinder. The second lifting cylinder is fixed on the mounting frame through the second cylinder seat. Four third guide sleeves are provided around the second cylinder seat. Four third guide shafts are provided around the upper shaping plate. The four third guide shafts are slidably disposed in the four third guide sleeves respectively.

6. The continuous cooling and shaping device for an extrusion blow molding machine according to claim 1, characterized in that: A guide rail frame is provided on the mounting bracket. A first linear slide rail is provided at both the front and rear ends of the guide rail frame. A rack plate parallel to the first linear slide rail is provided in the middle of the guide rail frame. Two first sliders are provided at both the front and rear ends of the bottom wall of the slide table. The two first sliders on the same side of the slide table are slidably locked onto the first linear slide rail on the same side. A servo reduction motor is provided on the slide table. A gear is provided on the output shaft of the servo reduction motor. The gear meshes with the rack plate. A left limit block and a right limit block are provided at the left and right ends of the guide rail frame, respectively. A clearance hole wider and higher than the servo reduction motor is provided on the push plate.

7. The continuous cooling and shaping device for an extrusion blow molding machine according to claim 6, characterized in that: Two push plates are symmetrically slidably mounted on the top wall of the slide table with the servo reduction motor as the center. A second linear slide rail is provided on the left and right sides of the top wall of the slide table. Two second sliders are provided at the left and right ends of the two push plates. The two second sliders on the same side are slidably locked on the second linear slide rail on the same side. A push-pull cylinder is provided at the front and rear ends of the top wall of the slide table. The piston rod of the push-pull cylinder is connected to the push plate on the same side. The push-pull cylinder is located in the clearance hole of the push plate.

Images