TWM455616U - Blow molding machine with temperature control system - Google Patents

Description

Blow molding machine with temperature control system

The present invention relates to a hollow molding machine with a temperature control system, in particular to a hollow molding machine that controls the temperature of the clamping device through a temperature control system to further control the working temperature of the mold to an appropriate range.

There is a hollow molding machine commercially available, which mainly heats the granular plastic into a molten shape, and then causes the molten plastic to form a hollow tubular blank substantially, covering the mold with the outer cover of the blank, and inflating the raw material. The billet is deformed by the gas pressure and deformed toward the inner wall of the mold cavity, and the article having the same shape as the mold cavity of the mold can be obtained after the billet is cooled.

The hollow molding machine is suitable for processing the plastic into a product, and the working temperature of the mold affects the quality of the product and the yield of the product. For example, the granular polylactic acid plastic is preferably used for the mold. The temperature is maintained at 80 ^. C~130 ^. Between C, such a product made of polylactic acid plastic can have good physical properties and can have a high process yield. However, in general, a hollow molding machine is used to provide a mold-bonded mold base which has no design capable of adjusting the temperature, so that the temperature of the mold is lower than 80 at the beginning of the operation ^. C, resulting in poor quality of the product, and as the writing time is extended, the mold absorbs the heat of the molten polylactic acid and heats up, causing the mold temperature to be between 80 ^. C~130 ^. C, but after the working time continues to increase, the temperature of the mold may rise to over 130 ^. C, this will cause the cooling effect of the mold to be poor, so that the product may be demolded in a state that has not been completely shaped, so that the final product may have a problem of excessive deformation.

In addition, although there is a conventional mold itself designed with heating and cooling devices or pipes, the mold itself is designed with the same shape as the product, so the heating and cooling device or piping design on the mold must be avoided. The cavity is so that the heating and cooling device directly disposed on the mold is not easy to make the overall temperature of the mold uniform, and each of the different molds needs to be provided with a heating and cooling device or a pipe, and the cost of the mold is also high.

In order to solve the problem, the present invention provides a hollow molding machine with a temperature control system, comprising a set of clamping devices, the clamping device comprising a first mold base and a second mold base, wherein the clamping device is further The invention includes a temperature control system, the temperature control system includes a first cooling unit and a first heating unit disposed on the first mold base, and a second cooling unit and a second heating unit disposed on the second mold base The temperature control system further includes a first temperature sensor for sensing the temperature of any one of the first or second mold bases.

The creation uses the cooling unit and the heating unit to adjust the temperature of the first mold base, and the cooling unit and the heating unit control the temperature of the second mold base to further adjust the working temperature of the first and second modules, and further can be processed according to the material. The required operating temperature adjusts the operating temperatures of the first and second modules, so that the hollow molding machine of the present temperature control system can be processed with any plastic to obtain good and stable physical properties and obtain good yield.

Furthermore, the first and second mold bases of the hollow molding machine with the temperature control system have the function of controlling the temperature, so that the first and second modules combined with the first and second mold bases do not need additional The heating or cooling of the pipeline or equipment can save the cost of the mold, and the maintenance and maintenance of the mold itself is simple and low-cost.

10‧‧‧Clamping device 12‧‧‧Temperature control system 20‧‧‧Blow molding machine 22‧‧‧Main body 23‧‧‧Track 24‧‧‧ Feeding hopper 26‧‧‧Unloading mechanism 28‧‧‧Bullet 30‧‧‧Blowing mechanism 32‧‧‧Air nozzle 34‧‧‧Cutting mechanism 36‧‧‧Cutting knife 38‧‧‧Drive rod 40‧‧‧Promoting rod 42‧‧‧First mold base 44‧‧ ‧ Inside side 46‧‧‧ Outer side 48‧‧‧Outer surface 50‧‧‧Perforation 52‧‧‧First cooling unit 54‧‧‧First entrance 56‧‧‧First exit 58‧‧‧First heating unit 60‧‧‧Second entrance 62‧‧‧Second exit 63‧‧‧First module 64‧‧‧First cavity 66‧‧‧First temperature sensor 68‧‧‧First nozzle 70‧‧ ‧Second mold base 72‧‧‧Inside surface 74‧‧‧Outer surface 76‧‧‧External surface 78‧‧‧Second cooling unit 79‧‧‧Joint hole 80‧‧‧First inlet 82‧‧‧ An outlet 84‧‧‧second heating Yuan 86‧‧‧Second inlet 88‧‧‧Second outlet 90‧‧‧Second module 92‧‧‧‧‧ Second cavity 94‧‧‧Second temperature sensor 96‧‧‧ Two nozzles 97‧‧‧Pipe 98‧‧‧Locking elements 99‧‧‧Temperature control equipment X‧‧‧First axial Y‧‧‧Second axial Z‧‧‧ third axial

Fig. 1 is a front view of a hollow molding machine for creating a temperature control system.

Fig. 2 is a perspective view showing the first and second die holders of the hollow molding machine with the temperature control system.

Figure 3 is a cross-sectional view taken along line 3-3 of Figure 1.

Fig. 4 is a view showing a state after the cutting mechanism cuts the billet.

Figure 5 is a diagram showing the state in which the first and second mold bases are displaced to align with the blanking mechanism.

Fig. 6 is a view showing a state in which the first and second die holders are driven to shift the billet to be aligned with the air blowing mechanism.

Figure 7 is a diagram showing an embodiment in which each temperature sensor is directly mounted on a module.

All of the following drawings are merely illustrative of the basic teachings of the present invention, and the extension of the number, position, relationship, and size of the components constituting the preferred embodiment will be explained in the drawings. Post-guided changes are implemented in industry skills. In addition, changes in the exact dimensions and size ratios associated with specific strengths, weights, strengths, and similar requirements are also within the skill of the industry after reading and understanding the teachings of this creation.

In the different figures, the same reference numerals are used to designate the same or similar elements; in addition, please refer to the text such as "first", "second", "upper", "lower", "before", "after", "inside" , "outside", "end", "part", "segment", "length", "surrounding", "side", etc. and similar terms are only convenient for the viewer to refer to the construction in the figure and only to help describe the text. Creation only.

According to the drawings, the hollow molding machine 20 with the temperature control system of the present invention includes a body 22 including a rail 23 formed on the front side, the body 22 further including an outer snail extending outward from the rail 23 Two drive rods 38 of the teeth and a push rod 40. The hollow molding machine 20 with the temperature control system further comprises a blanking mechanism 26 fixed on the body 22, an air blowing mechanism 30 and a material feeding mechanism 34, wherein the blanking mechanism 26 is combined with a feeding hopper 24, the cutting mechanism 34 includes all of the hoppers 36 that are movable along a first axis X, and the cutting mechanism 34 is located below the blanking mechanism 26 along a second axial direction Y perpendicular to the first axis X (as shown in Figure 1). The cutting mechanism 34 includes all of the hoppers 36 that are displaceable in the first axial direction X. The blowing mechanism 30 includes a nozzle 32 that is movable in the second axial direction Y.

According to the drawings, the hollow molding machine 20 with the temperature control system further includes a clamping device 10 movably disposed on the two driving rods 38, and the clamping device 10 includes a slidably disposed on the two driving rods 38. In a first mold base 42, the first mold base 42 includes an inner side surface 44 and an outer side surface 46, and an outer peripheral surface 48 extending between the inner and outer side surfaces 44, 46. The first mold base 42 further includes A second perforation 50 extends from the inner side 44 to the outer side 46. The clamping device 10 further includes a temperature control system 12 including a first mold base 42 including a first cooling unit 52 and a first heating unit 58, the first cooling unit 52 being formed in the first mold The U-shaped pipe in the seat 42 has a first heating unit 58 including a third axial direction Z formed in the first die holder 42 and perpendicular to the first and second axial directions X, Y and the first cooling unit 52. Separate U-shaped tubes, wherein the two ends of the first cooling unit 52 extend to the outer peripheral surface 48 to form a first inlet 54 and a first outlet 56. The two ends of the first heating unit 58 extend to the outer peripheral surface 48 to form a The second inlet 60 and a second outlet 62. The inner side surface 44 of the first mold base 42 is locked with a first module 63, and the first module 63 includes a first mold cavity 64. Each of the drive rods 38 of the body 22 is slidably sleeved with the perforations 50 of the first mold base 42, respectively, causing the first mold base 42 to be driven to be displaced along the third axial direction Z together with the first module 63.

The first and second inlets 54 and 60 and the first and second outlets 56 and 62 are respectively provided with a first nozzle 68. Each of the first nozzles 68 is sleeved with the first end of a pipeline 97. The second end of the 97 is sleeved with a temperature control device 99 of the temperature control system 12, so that the coolant, such as water, of the temperature control device 99 can be drained through the first cooling unit 52 of the first die holder 42 or will The heating liquid composed of the oil is drained through the first heating unit 58 of the first die holder 42. In addition, the temperature control system 12 further includes a first temperature sensor 66 disposed on the outer peripheral surface 48 of the first mold base 42 , and the first temperature sensor 66 is electrically connected to the temperature control device 99 to cause the first temperature. The sensor 66 detects the temperature feedback of the first mold base 42 to the temperature control device 99, and the temperature control device 99 controls the heating of the first mold base 42 with the heating liquid according to the temperature sensed by the first temperature sensor 66. The first mold base 42 is cooled by the cooling liquid.

According to the drawings, the clamping device 10 further includes a second mold base 70 fixed to the end of the two drive rods 38. The second mold base 70 includes an inner surface 72 and an outer surface 74, and inner and outer surfaces. A peripheral surface 76 extending between the surfaces 72, 74, the second mold base 70 further includes two coupling holes 79 extending from the inner surface 72 to the outer surface 74. The temperature control system 12 includes a second cooling unit 78 and a first a heating unit 84, the second cooling unit 78 includes a U-shaped tube formed in the second mold base 70, and the second heating unit 84 includes a second mold unit 70 formed in the second mold base 70 and along the third axial direction and the second cooling unit A spaced apart U-shaped tube, wherein the two ends of the second cooling unit 78 extend to the peripheral surface 76 to form a first introduction port 80 and a first outlet port 82, and the two ends of the second heating unit 84 extend to the peripheral surface 76 forms a second introduction port 86 and a second outlet port 88. The second surface 90 is locked to the inner surface 72 of the second die holder 70. The second module 90 includes a second cavity 92 aligned with the first cavity 64 of the first module 63. The ends of the driving rods 38 of the body 22 are respectively sleeved with the coupling holes 79 of the second die holder 70, and the two locking members 98 are screwed in the threaded sections of the driving rods 38, so that the locking members 98 respectively abut. The inner surface 72 and the outer surface 74 of the second mold base 70 cause the second mold base 70 to be displaced along the third axial direction Z together with the respective drive rods 38 and the second module 90. In addition, the push rod 40 of the body 22 abuts against the outer peripheral surface 48 of the first mold base 42 and the peripheral surface 76 of the second mold base 70, causing the push rod 40 to push the first mold along the first axial direction X and along the track 23. The seat 42, the second mold base 70, the first module 63, the second module 90, and the drive rods 38 are displaced together.

The first and second inlets 80, 86 and the first and second outlets 82, 88 are respectively provided with a second nozzle 96, and each of the second nozzles 96 is sleeved with the first end of a pipeline 97. The second end of the line 97 is sleeved with the temperature control device 99, so that the coolant of the temperature control device 99 can be drained through the second cooling unit 78 of the second die holder 70 or the heating liquid can be drained through the second die holder 70. Second heating unit 84. In addition, the temperature control system 12 further includes a second temperature sensor 94 disposed on the peripheral surface 76 of the second mold base 70, and the second temperature sensor 94 is electrically connected to the temperature control device 99 to cause a second temperature. The sensor 94 detects the temperature feedback of the second mold base 70 to the temperature control device 99, and the temperature control device 99 controls the heating of the second mold base 70 with the heating liquid according to the temperature sensed by the second temperature sensor 94. The second mold base 70 is cooled by the cooling liquid.

For convenience of explanation, it is assumed that the present invention uses polylactic acid (PLA/Poly Lactic Acid) as a processing raw material to manufacture a tubular product through a hollow molding machine 20 having a temperature control system, such that the polylactic acid granule raw material contained in the feed hopper 24 is At this time, the first and second die holders 42, 70 are aligned with the air blowing mechanism 30 (as shown in FIG. 1), and the first and second modules 63, 90 are spaced apart along the third axial direction to exhibit a mold opening state ( As shown in Figure 3). After the blow molding machine 20 with the temperature control system is activated, the first and second temperature sensors 66, 94 detect that the temperatures of the first and second modules 63, 90 are too low, and thus the temperature control device 99 drives the heating. The subsequent heating liquid flows through the first heating unit 58 of the first mold base 42 and the second heating unit 84 of the second mold base 70, respectively, so that the temperature of the first and second mold bases 42, 70 rises, and The module 63 abuts against the inner side surface 44 of the first mold base 42 and the second module 90 abuts against the inner surface 72 of the second mold base 70, thus the first and second mold bases 42, 70 and the first and second The modules 63, 90 temperature rise to 80 together ^. C~130 ^. The operating temperature between C (for a suitable temperature for the polylactic acid material).

When the temperatures of the first and second die holders 42, 70 and the first and second modules 63, 90 reach the operating temperature, and the polylactic acid pellet raw material enters the blanking mechanism 26 to be heated to a molten state, the molten polylactic acid raw material falls. The end of the material mechanism 26 slowly falls along the second axial direction Y to form a blank 28 until the blank 28 has a sufficient length along the second axial direction Y (as shown in Fig. 1), and the push rod 40 abuts the first The first and second die holders 42, 70 are displaced below the blanking mechanism 26 and cause the first cavity 64 of the first module 63 and the second cavity 92 of the second module 90 to be aligned with the blank 28 (Fig. 4) After being shown, the first and second modules 63, 90 are driven to move simultaneously in the third axial direction Z to form a closed state, causing the blank 28 to be clamped to the first cavity 64 and the second module of the first module 63. Between the second cavities 92 of 90, at this time, the cutting mechanism 34 drives the cutting blade 36 to cut the blank 28 (as shown in Fig. 5), and then the push rod 40 links the first and second die holders 42, 7 Displaceing in the first axial direction X to a position aligned with the air blowing mechanism 30, the air blowing mechanism 30 moves the air nozzle 32 into the blank 28 in the second axial direction Y and inflates, causing the blank 28 to be pressed against the gas. On the surface of the first cavity 64 of the first module 63 and the second cavity 92 of the second module 90, a tubular article is obtained after the blank 28 is cooled.

When the first and second modules 63, 90 cause the temperature to rise above the operating temperature due to contact with the billet 28 of the polylactic acid in the molten state, the first and second temperature sensors 66, 94 detect the first and the second 42, 70 two mold temperature is too high (e.g. greater than ^130. C), the temperature control device 99 so that the supply of heating fluid, temperature control equipment converts the seat 99 to supply cooling fluid through the first die holder 42, a first cooling unit 52 And the second cooling unit 78 of the second die holder 70 causes the first and second die holders 42, 70 to cool down, further cooling the first and second modules 63, 90, so that the first and second modules 63 can be The temperature of 90 is controlled within the preset operating temperature range.

The creation uses the temperature control system 12 to adjust the temperatures of the first and second mold bases 42, 70 to further adjust the operating temperature of the first and second modules 63, 90, thereby being able to adjust according to the operating temperature required for the processed material. The operating temperatures of the first and second modules 63, 90 allow the hollow molding machine 20 of the present temperature control system to be processed using any plastic to obtain good and stable physical properties and to obtain good yield.

Furthermore, the temperature control system 12 of the hollow molding machine 20 with the temperature control system can adjust the temperature of the first and second mold bases 42, 70, and thus the first combination with the first and second mold bases 42, 70 And the second module 63, 90 itself does not need additional heating and cooling pipelines or equipment, so that the cost of the mold can be saved, and the maintenance and maintenance of the mold itself is simpler and lower in cost.

In the present invention, the first temperature sensor 66 is mounted on the first die holder 42 in addition to the first to sixth drawings, and the second temperature sensor 94 is mounted on the second die pad 70, and can also be As shown in FIG. 7 , the first temperature sensor 66 is combined with the first module 63 , and the second temperature sensor 94 is coupled to the second module 90 , such that the first temperature sensor 66 directly detects the first module 63 . The operating temperature of the second temperature sensor 94 directly detects the operating temperature of the second module 90, which will enable more precise control of the operating temperatures of the first module 63 and the second module 90.

The basic teachings of this creation have been described, and many extensions and variations will be apparent to those of ordinary skill in the art. For example, the first heating unit 58 of the first mold base 42 may be in the form of a heating liquid that is not passed through the U-shaped pipe. For example, the first heating unit 58 may be a resistance heating coil, and the second mold base 70 The second heating unit 84 may be in the form of a heating liquid that is not passed through the U-shaped pipe. For example, the second heating unit 84 may be formed by a resistive heating coil.

The present invention disclosed in the specification is to be considered as illustrative and not restrictive. The scope of the present invention is defined by the scope of the appended claims, and is not intended to be limited by the scope of the invention.

10‧‧‧Clamping device

12‧‧‧temperature control system

42‧‧‧ first mold base

44‧‧‧ inside side

46‧‧‧Outside

48‧‧‧ outer perimeter

50‧‧‧Perforation

52‧‧‧First cooling unit

54‧‧‧ first entrance

56‧‧‧First exit

58‧‧‧First heating unit

60‧‧‧second entrance

62‧‧‧second exit

63‧‧‧ first module

64‧‧‧First cavity

66‧‧‧First temperature sensor

68‧‧‧First mouthpiece

70‧‧‧Second mold base

72‧‧‧ inner surface

74‧‧‧ outer surface

76‧‧‧ peripheral surface

78‧‧‧Second cooling unit

79‧‧‧Combination hole

80‧‧‧first inlet

82‧‧‧First export

84‧‧‧second heating unit

86‧‧‧Second inlet

88‧‧‧Second outlet

90‧‧‧ second module

92‧‧‧Second cavity

94‧‧‧Second temperature sensor

96‧‧‧second mouthpiece

98‧‧‧Locking components

X‧‧‧first axial direction

Y‧‧‧second axial

Z‧‧‧third axial

Claims (6)

A hollow molding machine with a temperature control system, comprising a set of clamping device (10), the clamping device (10) comprising a first mold base (42) and a second mold base (70), characterized in that The clamping device (10) further includes a temperature control system (12) including a first cooling unit (52) and a first heating unit disposed on the first mold base (42) 58), and a second cooling unit (78) and a second heating unit (84) disposed on the second mold base (70), the temperature control system (12) further comprising a first temperature sensor (66) The first temperature sensor (66) is configured to sense the temperature of any one of the first or second mold bases (42, 70). The hollow molding machine with a temperature control system according to claim 1, wherein the first cooling unit (52) comprises a hollow pipe formed in the first die holder (42), and the first cooling unit (52) The two ends respectively form a first inlet (54) and a first outlet (56), and the first heating unit (58) includes a hollow conduit formed in the first mold base (42), the first heating unit The second ends of (58) respectively form a second inlet (60) and a second outlet (62), and the second cooling unit (78) includes a hollow conduit formed in the second mold base (70), and second The two ends of the cooling unit (78) respectively form a first introduction port (80) and a first outlet (82), and the second heating unit (84) includes a hollow tube formed in the second mold base (70). The second ends of the second heating unit (84) respectively form a second inlet (86) and a second outlet (88). The hollow molding machine with a temperature control system according to claim 1, wherein the temperature control system (12) further comprises a second temperature sensor (94), and the first temperature sensor (66) senses The temperature of the first mold base (42) is measured, and the second temperature sensor (94) senses the temperature of the second mold base (70). A hollow molding machine with a temperature control system, comprising a set of clamping devices (10) for clamping first and second modules (63, 90), the clamping device (10) having a first mold base ( 42) and a second mold base (70), characterized in that the clamping device (10) further comprises a temperature control system (12), and the temperature control system (12) comprises a first mold base (42) a first cooling unit (52) and a first heating unit (58), and a second cooling unit (78) and a second heating unit (84) disposed on the second mold base (70), temperature control The system (12) further includes a first temperature sensor (66) for sensing the temperature of any of the first or second modules (63, 90). A hollow molding machine with a temperature control system according to claim 4, wherein the first cooling unit (52) comprises a hollow pipe formed in the first die holder (42), the first cooling unit (52) The two ends respectively form a first inlet (54) and a first outlet (56), and the first heating unit (58) includes a hollow conduit formed in the first mold base (42), the first heating unit The second ends of (58) respectively form a second inlet (60) and a second outlet (62), and the second cooling unit (78) comprises a hollow conduit formed in the second mold base (70), The two ends of the two cooling units (78) respectively form a first introduction port (80) and a first outlet (82), and the second heating unit (84) includes a hollow formed in the second mold base (70). The second end of the second heating unit (84) forms a second inlet (86) and a second outlet (88). The hollow molding machine with a temperature control system according to claim 4, wherein the temperature control system (12) further comprises a second temperature sensor (94), and the first temperature sensor (66) senses The temperature of the first module (63) is measured, and the second temperature sensor (94) senses the temperature of the second module (90).