TWI843402B - Hollow Blow Molding Mold Structure - Google Patents

Abstract

The present invention at least comprises: a fixed module, a movable module, and a telescopic device connected between the fixed module and the movable module, wherein: the fixed module at least comprises a left side mold base having a left concave area, and a fixed frame plate assembled at the back of the left side mold base; the movable module at least comprises a right side mold base having a right concave area, and a movable frame plate assembled at the back of the right side mold base; the telescopic device has two ends. The mold base can be directly or indirectly assembled and fixed to the fixed part of the left mold base of the fixed mold and the positioning part of the right mold base of the movable mold; and a size mold base can be sandwiched between the left mold base and the right mold base, so that at least one or more size mold bases can be sandwiched in the maximum movable stroke between the left mold base and the right mold base, thereby forming a stepless size adjustment effect in the maximum movable stroke.

Description

Hollow blow molding mold structure

The present invention relates to a hollow blow molding mold; in particular, to a hollow blow molding mold structure that can be directly replaced and the mold size can be changed on the machine without removing all the molds.

According to the commonly used hollow blow molding mold, it is usually composed of a male mold with a recessed chamber and a female mold with a recessed chamber, wherein: the back of the male and female molds are respectively provided with a slightly shorter fixed frame plate, and the fixed frame plate is locked and fixed to a back panel slightly larger than the male and female molds, and then the back panel is locked and fixed to the left and right side tables of the machine, so that when the left and right side tables of the machine are approaching or moving away from each other, it can effectively control whether the male and female molds are relatively closed or opened;

When the product is to be produced, the machine's discharge die head will extrude the spherical hot-melt expandable plastic downwards to between the male and female molds, and then the machine will drive the male and female molds toward each other (i.e. close), so that the hot-melt expandable plastic will be sandwiched between the male and female molds. At this time, the machine will push a hollow air needle from the lower air inlet of the male mold to penetrate into the air inlet sandwiched between the male and female molds. The pressurized gas is blown into the hot-melt expansion plastic from the air needle to force it to fit more closely to the wall of the recessed chamber of the male and female molds. After cooling, the machine will drive the male and female molds to move away from each other (i.e. open), so that the cooled plastic attached to the male mold can be directly removed, thus completing the process of producing a product with a hollow blow molding mold;

When you want to produce products of the same style but different sizes (i.e. increase or decrease the size), you must remove the original male and female molds that have been locked and fixed to the machine one by one, and then reassemble a set of new male and female molds with predetermined sizes on the left and right side tables of the machine to replace them, so that you can produce the required products of the same style but different sizes;

Although the above creation can achieve its intended purpose, it will have the following deficiencies in operation due to the original size of the male and female molds:

Because for the same style but different sizes, a new mold must be opened (i.e. only the male and female molds, but not including the fixed frame and back panel), which greatly increases the total cost of the mold, which is a major problem.

As mentioned above, since the fixed frame plate and the back panel are common parts of the male and female molds of each size, before producing products of different sizes, the previously produced molds must be completely disassembled and separated, and then the fixed frame plate and the back panel must be reassembled to the new male and female molds of the corresponding sizes, and finally, they must be re-locked and assembled to the left and right side tables of the machine. In this way, not only will the disassembly or reassembly operation be more inconvenient and troublesome, but it will also increase the labor hours required for replacement and the machine downtime, thereby reducing the total production volume, and greatly increasing the overall molding process, which is another major problem.

As mentioned above, since the air needle and the discharge die are located above and below the machine (i.e. the horizontal position of the discharge die must be higher than the height of the back panel, and the air needle is located near the bottom of the back panel), and the back panel that has been locked on the left and right side tables of the machine has a certain size, the new male and female molds with smaller sizes must be installed near the bottom of the back panel, which will increase the distance between the discharge die of the machine and the upper edge of the male and female molds, thereby causing too much residual or waste materials during production, greatly increasing its plastic cost and reducing its market competitiveness, which is another major problem.

Therefore, how to develop a quick operation convenience that can change the mold size directly on the machine without removing all the molds, shorten the replacement time and downtime, and reduce its production cost is a problem that the industry currently needs to solve with great priority.

The main content of the hollow blow molding mold structure of the present invention is to provide a kind of device that is connected to the fixed module and the movable module at both ends of the telescopic device, and the guide part of the fixed frame plate that has been assembled and fixed on the back of the left mold base of the fixed module can be relatively limited at the guide part of the right mold base or the guide part of the movable frame plate, and at least one or more size mold bases are sandwiched between the left mold base of the fixed module and the right mold base of the movable module, so that the fixed module, the size mold base and the right mold base of the movable module are connected and locked into a whole, so as to greatly improve the three-way connection strength between the left mold base, the size mold base and the right mold base; in this way, it not only In addition to being able to adjust the size steplessly within the maximum travel distance between the fixed module and the movable module, the machine can also be partially disassembled for maintenance or size replacement, providing the convenience of quick operation without disassembling all the molds and directly replacing the new mold size, and reducing the overall cost required for maintenance and replacement; and when the mold size is increased or decreased directly on the machine, the machine's discharge die head can also increase or decrease with the increase or decrease of the mold size, ensuring that the distance between the discharge die head and the feed port of the mold remains fixed, greatly reducing the generation of residual or waste materials, thereby greatly reducing its production costs and improving its market competitiveness as its progressive proposition.

In order to achieve the above-mentioned purpose, the main technical means of the present invention at least include: a fixed module, a movable module, and a telescopic device connected between the fixed module and the movable module, wherein: the fixed module at least includes a left side mold base with a left recessed area, and a fixed frame plate assembled at the back of the left side mold base; the left side mold base at least includes a left recessed area, a limit groove for accommodating one end of the limit block for clamping and limiting, a left side fixing portion for fixing the locking unit assembly, a locking screw hole for locking and fixing the fixed frame plate, and a screw hole for the telescopic device to be fixed. The fixing portion is provided at one end of the left mold base; the limiting groove is located between the left recessed area and the outer wall of the left mold base; the fixed frame plate at least includes a fixing hole for one end of the long bolt to penetrate, and a guide portion for moving the guide portion located at the right mold base or another guide portion at the movable frame plate, the length of the fixed frame plate is greater than the size of the left mold base, and the bottom end surface of the fixed frame plate protruding from the back of the left mold base is located above the back of the right mold base so that the fixed frame plate and the right mold base will not be directly linked; the guide portion is provided with a The movable mold assembly comprises at least a right side mold base having a right concave area, and a movable frame plate assembled at the back of the right side mold base; the right side mold base comprises at least a right concave area, a receiving groove for accommodating and locking the other end of the limit block, a right side fixing portion for assembling the locking unit, a locking screw hole for locking and fixing the movable frame plate, an adjustment hole for assembling the guide part, and a positioning portion for assembling the other end of the telescopic device; and the limit block assembled and fixed at the receiving groove One end is accommodated and engaged in the limiting groove, and the right side fixing part is aligned with the left side fixing part, so that the left side fixing part and the right side fixing part are connected and locked into a whole by utilizing the locking effect of the locking unit, so as to greatly improve the bonding strength between the left side mold base and the right side mold base; the movable frame plate at least includes a positioning hole for one end of another long bolt to penetrate, and another guide part for the guide part of the fixed frame plate to be mutually sleeved and moved; the back of the right side mold base is directly or indirectly formed with a guide part, so that the guide part can be shaped with the guide part of the fixed frame plate The left mold base and the right mold base are provided with the size mold base, and the maximum movable stroke between the left mold base and the right mold base can accommodate at least one or more size mold bases, so as to form a stepless size adjustment effect in the maximum movable stroke; the two ends of the telescopic device can be directly or indirectly assembled and fixed at the fixed part of the fixed mold and the positioning part of the movable mold; the telescopic device at least includes a cylinder body for accommodating and storing fluid, and a fluid injected into the cylinder body to push it a push rod for reciprocating movement toward the outer side of the cylinder body; the size mold base at least includes an inner concave chamber, a first limit groove for fixing the limit block, a second limit groove for accommodating and engaging one end of another limit block assembled at the right mold base, a left limit portion aligned with the left side fixing portion of the left mold base, a right limit portion aligned with the right side fixing portion of the right mold base, and a screw hole for locking one end of a locking bolt that has passed through the fixing plate; the fixing plate at least includes a through hole for passing one end of the locking bolt, a screw hole for locking one end of the long bolt, and a fixing portion for assembling one end of the telescopic device; the fixing plate is assembled at the back of the size mold base, and the top surface of the fixing plate can be locked to the fixing frame plate and the bottom surface can be locked to the size mold base by the locking action of the long bolt and the locking bolt, so that the fixing frame plate, the fixing plate and the size mold base are connected and locked into a whole, so as to greatly improve the strength of the combination between them; furthermore, the limit block assembled at the first limit groove and the other limit block assembled at the right side mold base are used to accommodate the engagement At the limit groove of the left mold base and the second limit groove of the size mold base, the locking unit is screwed into the left side fixing part of the left mold base and the right side fixing part of the right mold base respectively, so that one end of the locking unit can be extended to the outside of the left side fixing part and the outside of the right side fixing part respectively, and the protruding end of the locking unit can be directly inserted into the left limit part and the right limit part of the size mold base respectively and connected and locked into a whole, so as to greatly improve the three-way combination strength between the left mold base, the size mold base and the right mold base.

[The present invention]

A:Mold

1:Fixed module

10: Left side mold base

100: Left concave area

101: Limiting slot

102: Left side fixed part

103: Locking screw hole

104:Fixed part

11: Limit block

12: Locking unit

15:Fixed frame plate

150:Fixing hole

151: Guidance Department

16: Long bolt

17: Bolts

18: Locking bolt

2: Activity module

20: Right side mold base

200: right depression area

201: Container

202: Right side fixed part

203: Locking screw hole

204: Adjust the fixed hole

205: Positioning unit

21: Movable frame

210: Positioning hole

25: Introduction

26: Introduction

3: Telescopic device

30: Cylinder body

31: Putting

4: Size of mold base

40: Alcove

41: First limiting groove

42: Second limit groove

43: Left stopper

44: Right stopper

45: screw hole

5:Fixed plate

50:Piercing

51: screw hole

52: Fixed part

Figure 1 is a three-dimensional exploded schematic diagram of the present invention.

Figure 2 is a top view of the combination of Figure 1 when it is applied.

Figure 3 is a schematic diagram of the combined cross-section of Figure 2.

Figure 4 is a top view of Figure 2 when the mold is enlarged.

Figure 5 is a combined cross-sectional view of Figure 4.

Figure 6 is a top view of Figure 2 when the mold is increased to a larger size.

Figure 7 is a combined cross-sectional view of Figure 6.

Figure 8 is a three-dimensional exploded schematic diagram of the second embodiment of the present invention.

Figure 9 is a top view of the combination when Figure 8 is applied.

Figure 10 is a combined cross-sectional view of Figure 9.

Figure 11 is a top view of the assembly in Figure 9 when the size is being changed.

Figure 12 is a combined cross-sectional view of Figure 11.

Figure 13 is a top view of the assembly after the size of Figure 11 is changed.

Figure 14 is a combined cross-sectional view of Figure 13.

Figure 15 is a three-dimensional exploded schematic diagram of the third embodiment of the present invention.

The present invention is related to a hollow blow molding mold structure. Please refer to Figures 1 to 7. The mold A at least includes: a fixed module 1, a movable module 2, and a telescopic device 3 connected between the fixed module 1 and the movable module 2, wherein:

The fixed module 1 at least comprises a left side mold base 10 having a left recessed area 100, and a fixed frame plate 15 assembled at the back of the left side mold base 10; the left side mold base 10 at least comprises a left recessed area 100, a limit groove 101 for accommodating the limit block 11 at one end, a left side fixing portion 102 for fixing the locking unit 12, a locking screw hole 103 for locking and fixing the fixed frame plate 15, and a fixing portion 104 for assembling one end of the telescopic device 3; the limit groove 101 is located between the left recessed area 100 and the outer wall of the left side mold base 10; and the fixed frame plate 15 at least comprises a fixing hole 150 for inserting one end of the long bolt 16, and a fixing hole 104 for inserting the long bolt 16. The guide part 25 located at the right side mold base 20 or the guide part 151 for moving the other guide part 26 at the movable frame plate 21, the length of the fixed frame plate 15 is greater than the size of the left side mold base 10, and the bottom end surface of the fixed frame plate 15 protruding from the back of the left side mold base 10 is located above the back of the right side mold base 20, so that there is no direct connection between the fixed frame plate 15 and the right side mold base 20; the guide part 151 is integrated or screwed with bolts 17 to combine it with one side of the fixed frame plate 15, and the shape of the guide part 151 is preferably a long hole, a T-shaped slot, a dovetail slot, a convex block, a T-shaped block, or a dovetail block;

The movable mold 2 at least comprises a right side mold base 20 having a right recessed area 200, and a movable frame plate 21 assembled at the back of the right side mold base 20; the right side mold base 20 at least comprises a right recessed area 200, a receiving groove 201 for accommodating and locking the other end of the limit block 11, a right side fixing portion 202 for assembling the locking unit 12, a locking screw hole 203 for locking and fixing the movable frame plate 21, an adjustment hole 204 for assembling the guide portion 25, and a right side fixing portion 202 for assembling the locking unit 12. The other end of the telescopic device 3 is provided with a positioning portion 205; and one end of the limit block 11, which is fixedly assembled at the receiving groove 201, is received and engaged in the limiting groove 101, and the right side fixing portion 202 is aligned with the left side fixing portion 102, so that the left side fixing portion 102 and the right side fixing portion 202 are connected and locked into a whole by utilizing the locking effect of the locking unit 12, so as to greatly enhance the bonding strength between the left side mold base 10 and the right side mold base 20; the movable frame 21 at least includes a positioning hole 210 for inserting one end of another long bolt 16, and another guide portion 26 for mutual insertion and movement of the guide portion 151 of the fixed frame plate 15; the guide portion 25 is directly or indirectly formed on the back of the right side mold base 20, so that the guide portion 25 can form a relative limited displacement with the guide portion 151 of the fixed frame plate 15; the so-called "the guide portion 25 is directly formed on the back of the right side mold base 20" refers to the right side mold base 20 and the guide portion 151 of the fixed frame plate 15. The guide part 25 is made in an integrally formed manner; the so-called "guide part 25 indirectly formed on the back of the right side mold base 20" refers to the use of a plurality of adjustment holes 204 formed on the back of the right side mold base 20, so that one end of the columnar guide part 25 can be screwed and locked in the adjustment hole 204, and the other end of the guide part 25 can protrude from the back of the right side mold base 20, so that the columnar guide part 25 can move in a limited manner along the direction of the long hole-shaped guide part 151;

The two ends of the telescopic device 3 can be directly or indirectly assembled and fixed at the fixed part 104 of the fixed module 1 and the positioning part 205 of the movable module 2; the telescopic device 3 at least includes a cylinder 30 for accommodating and storing fluid (not shown in the figure, such as liquid or gas, etc.), and a push rod 31 that is pushed by the fluid injected into the cylinder 30 to move back and forth toward the outside of the cylinder 30, and the telescopic device 3 is preferably a hydraulic cylinder;

When assembling, the guide portion 151 is screwed together with the bolt 17 to be fixed to two different sides of one end of the fixed frame plate 15, and then one end of the long bolt 16 is inserted into the fixing hole 150 and screwed to the locking screw hole 103 of the left side mold base 10, so that the fixed frame plate 15 and the left side mold base 10 can be fixed together as a whole, and the fixed frame plate 15 and the left side mold base 10 can be fixed together as a whole. One end of the fixed frame plate 15 will protrude outside the left side mold base 10; then, the limit block 11 is first locked and fixed in the receiving groove 201, so that one end of the limit block 11 will protrude from the side section of the right recessed area 200; then, another long bolt 16 is used to penetrate one end of the positioning hole 210 of the movable frame plate 21 and directly screwed and locked to the back of the right side mold base 20. The screw holes 203 are locked so that the movable frame plate 21 is locked and fixed to the stop block 11 and the right side mold base 20 to form a whole. At this time, when the side section of the right recessed area 200 of the right side mold base 20 with the movable frame plate 21 is moved toward the side section of the left recessed area 100 of the left side mold base 10 to form a contact fit, in addition to enabling the protruding portion of the right side mold base 20 One end of the stop block 11 at the left mold base 10 will be engaged with the inside and outside of the limit groove 101 of the left mold base 10, and one end of the fixed frame plate 15 protruding from the left mold base 10 will be placed on the upper back of the right mold base 20 (that is, the fixed frame plate 15 will not be directly connected to the right mold base 20), and the convex block-shaped guide portion 151 located on the side of one end of the fixed frame plate 15 will accommodate The guide portion 26 of the movable frame plate 21 and the long hole-shaped guide portion 151 on the other side are aligned and located just above the adjustment hole 204 of the right side mold base 20, and then one end of the columnar guide portion 25 passes through the long hole-shaped guide portion 151 and is screwed and locked to the adjustment hole 204 of the right side mold base 20, so that the other end of the guide portion 25 can protrude from the back of the right side mold base 20 and The guide portion 25 can be accommodated in the long hole-shaped guide portion 151, so that the columnar guide portion 25 can only move in the long hole-shaped guide portion 151 in a limited manner; at this time, the right side fixing portion 202 located at the right side mold base 20 is aligned with the left side fixing portion 102 of the left side mold base 10, and the left side fixing portion 102 and the right side fixing portion 20 are screwed together by the locking unit 12. 2 are connected and locked into a whole, which can greatly improve the bonding strength between the left mold base 10 and the right mold base 20; finally, the two ends of the telescopic device 3 (i.e., the hydraulic cylinder) are directly or indirectly assembled and fixed to the fixed part 104 of the fixed mold 1 and the positioning part 205 of the movable mold 2 (such as: Figures 2 and 3). In this way, the left mold base 10 and the right mold base 20 can be combined into a complete mold A size required. In particular, when the total size of the mold A is to be increased, only the right mold base 20 (but not including the left mold base 10) can be directly disassembled on the machine for maintenance or size replacement, so as to provide the convenience of quick operation without disassembling the entire mold A and reduce the cost required for maintenance and replacement.

Please refer to Figures 4 to 7. When the overall size of the mold A is to be slightly increased or increased, the locking unit 12 of the mold A fixed on the machine only needs to be rotated in the opposite direction until the end of the locking unit 12 can be separated from the right side fixing portion 202 of the right side mold base 20 (i.e., the left side fixing portion 102 and the right side fixing portion 202 can be separated and freely moved). Then, the push rod 31 of the telescopic device 3 can be started to push outward, so that the push rod 31 can drive the right side mold base 20 to move to the right side to an appropriate distance, and then a mold base 4 of a desired size (i.e., slightly increased or increased) can be placed between the left side mold base 10 and the right side mold base 20, and the mold base 4 of the desired size can be moved to the right side to a desired distance. The left side section of the left mold base 10 is first pressed against the right side section of the left mold base 10, and the left stopper 43 of the size mold base 4 can be aligned with the left side fixing portion 102 of the left mold base 10, so that one end of the locking unit 12 that has been screwed to the left side fixing portion 102 can continue to rotate until its end enters the left stopper 43; When the retractable device 3 is started again, the push rod 31 is retracted toward the cylinder 30 and drives the right mold base 20 to move to the left until the left side section of the right mold base 20 can be closely attached to the right side section of the size mold base 4, and the right side fixing portion 202 of the right mold base 20 is aligned with the right side section of the size mold base 4. After the stopper 44 is located, one end of the other locking unit 12 can be screwed into the right side fixing portion 202 and then continued to rotate until the end thereof enters the right stopper 44, so that the left side mold base 10, the size mold base 4 and the right side mold base 20 are firmly connected and locked into a whole, so as to greatly enhance the bonding strength between the left side mold base 10, the size mold base 4 and the right side mold base 20. In this way, the left side mold base 10, the size mold base 4 and the right side mold base 20 can be combined into a complete mold A whose total size needs to be changed. In particular, when changing the total size, the left side mold base 10 and the right side mold base 20 already on the machine can be used for the operation. The invention can perform the separation operation without disassembly and the urgent operation of directly replacing the size mold base 4 on the machine, so as to provide the convenience of quick operation without disassembly and reduce the cost of replacement, thereby achieving the dual functions of replacing the size without disassembly and having stepless size adjustment; in addition, when the size of the mold A is directly adjusted on the machine, the discharge die head (not shown in the figure) of the machine can also increase or decrease with the increase or decrease of the size of the mold A, so as to ensure that the distance between the discharge die head and the feed port (not shown in the figure) of the mold A remains fixed, so as to greatly reduce the generation of residual or waste materials, thereby greatly reducing its production cost and improving its market competitiveness.

Please refer to Figures 8 to 14, which are the second embodiment of the present invention. The main changes are: the size mold base 4 is sandwiched between the left mold base 10 and the right mold base 20. In other words, the maximum movable stroke between the left mold base 10 and the right mold base 20 can sandwich at least one or more size mold bases 4, so as to form a stepless size adjustment effect in the maximum movable stroke; and the size mold base 4 at least includes an inner concave chamber 40, a first limit groove 41 for the limit block 11 to be assembled and fixed, a second limit groove 42 for accommodating and engaging one end of another limit block 11 assembled at the right mold base 20, and a second limit groove 42 aligned with the left mold base 10. 0, a left stopper 43 at the left side fixing portion 102 of the right side mold base 20, a right stopper 44 aligned with the right side fixing portion 202 of the right side mold base 20, and a screw hole 45 for locking one end of the locking bolt 18 that has passed through the fixing plate 5; and the fixing plate 5 at least includes a through hole 50 for passing one end of the locking bolt 18, a screw hole 51 for locking one end of the long bolt 16, and a fixing portion 52 for assembling one end of the telescopic device 3; the fixing plate 5 is assembled at the back of the size mold base 4, and the locking action of the long bolt 16 and the locking bolt 18 can respectively lock the top surface of the fixing plate 5 to the fixing frame plate 15 and the bottom surface to the size The mold base 4 is formed so that the fixed frame plate 15, the fixed plate 5, and the size mold base 4 are connected and locked into a whole, so as to greatly enhance the strength of the combination between them; furthermore, the limit block 11 assembled at the first limit groove 41 and the other limit block 11 assembled at the right mold base 20 are respectively accommodated and engaged with the limit groove 101 of the left mold base 10 and the second limit groove 42 of the size mold base 4, and the locking unit 12 is respectively screwed on the left side fixing portion 102 of the left mold base 10 and the right side fixing portion 202 of the right mold base 20, so that one end of the locking unit 12 can be extended to the left side fixing portion 10 2 and the right side fixing part 202, and the protruding end of the locking unit 12 can be directly inserted into the left stop part 43 and the right stop part 44 of the size mold base 4 and connected and locked into a whole, so as to greatly improve the strength of the combination of the left mold base 10, the size mold base 4 and the right mold base 20; as for the above-mentioned fixed module 1, the left mold base 10, the fixed frame plate 15, the movable module 2, the right mold base 20, the movable frame plate 21, the guide parts 25, 26, and the telescopic device 3 and their relative arrangement relationship and function, they have been described in detail in the above content, so they will not be repeated here.

Please refer to FIG. 5, which is a third embodiment of the present invention. The main changes are: the fixed module 1 and the movable module 2 are located on the left and right sides of the mold A, but the fixed module 1 is located in the middle of the mold A, and the movable module 2 is located on the left and right sides of the mold A or the fixed module 1, and two telescopic devices 3 are respectively arranged at the fixed module 1 and the movable module 2; and, At least one or more size mold bases 4 are sandwiched between the left mold base 10 of the fixed mold 1 and the right mold base 20 of the movable mold. In other words, at least one or more size mold bases 4 can be sandwiched in the maximum movable stroke between the left mold base 10 and the right mold base 20, thereby providing a stepless size adjustment function in the maximum movable stroke. Furthermore, the locking unit 12 is screwed to the left mold base 10 and the right mold base 20. After the left side fixing portion 102 of the left side mold base 10 and the right side fixing portion 202 of the right side mold base 20 are moved, one end of the locking unit 12 can be extended to the outer side of the left side fixing portion 102 and the outer side of the right side fixing portion 202 respectively, and the protruding end of the locking unit 12 can be directly inserted into the left stop portion 43 and the right stop portion 44 of the size mold base 4 respectively, so that it is connected and locked into a whole, so as to greatly The strength of the combination of the left mold base 10, the size mold base 4 and the right mold base 20 is improved; as for the above-mentioned fixed module 1, the left mold base 10, the fixed frame plate 15, the movable module 2, the right mold base 20, the movable frame plate 21, the guide parts 25, 26, and the telescopic device 3 and their relative arrangement relationship and functions, they have been described in detail in the above content, so they will not be repeated here.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention; therefore, all equivalent changes or modifications based on the features and spirit described in the scope of the present invention should be included in the scope of the patent application of the present invention.

A:Mold

1:Fixed module

10: Left side mold base

100: Left concave area

101: Limiting slot

102: Left side fixed part

103: Locking screw hole

104:Fixed part

11: Limit block

12: Locking unit

15:Fixed frame plate

150:Fixing hole

151: Guidance Department

16: Long bolt

17: Bolts

2: Activity module

20: Right side mold base

200: right depression area

201: Container

202: Right side fixed part

203: Locking screw hole

204: Adjust the fixed hole

205: Positioning unit

21: Movable frame

210: Positioning hole

25: Introduction

26: Introduction

3: Telescopic device

30: Cylinder body

31: Putting

Claims (13)

A hollow blow molding mold structure, the mold at least includes: a fixed module, a movable module, and a telescopic device connected between the fixed module and the movable module, wherein: The fixed module at least includes a left side mold base having a left recessed area; The movable module at least includes a right side mold base having a right recessed area; The two ends of the telescopic device can be directly or indirectly assembled and fixed to the fixed part of the left mold base of the fixed module and the positioning part of the right mold base of the movable module; Through the above structure, the two ends of the telescopic device are respectively assembled at the fixed module and the movable module, so that the left mold base and the right mold base can be combined into a complete mold size required to ensure that maintenance or size replacement can be performed on the machine without completely disassembling it, thereby achieving the convenience of quick operation without completely disassembling it to replace the size and reducing the cost required for maintenance and replacement. According to the hollow blow molding mold structure in the first item of the patent application, the fixed mold assembly further includes a fixed frame plate assembled on the back of the left mold base, and the bottom end surface of the fixed frame plate protruding from the back of the left mold base is straddled above the back of the right mold base, so that there is no direct connection between the fixed frame plate and the right mold base; and a guide portion is assembled on the fixed frame plate. According to the hollow blow molding mold structure in item 2 of the patent application, the telescopic device at least includes a cylinder for accommodating and storing fluid, and a push rod that is pushed by the fluid injected into the cylinder to move back and forth toward the outside of the cylinder. According to the hollow blow molding mold structure in item 3 of the patent application, a guide portion is formed on the back of the right side mold base so that the guide portion can form a relative limited displacement with the guide portion of the fixed frame plate. According to the hollow blow molding mold structure of item 3 of the patent application, a plurality of adjustment holes are formed on the back of the right side mold base, so that one end of the columnar guide part can be screwed and locked in the adjustment hole, and the other end of the guide part can protrude from the back of the right side mold base, so that the columnar guide part can move in a limited manner along the direction of the long hole-shaped guide part. According to the hollow blow molding mold structure in item 3 of the patent application, the movable module further includes a movable frame plate assembled on the back of the right side mold base, and a guide portion is formed on the movable frame plate so that the guide portion can form a relative limited displacement with the guide portion of the fixed frame plate. According to the hollow blow molding mold structure of one of the items 1 to 6 of the patent application scope, a limit groove is provided at the left mold base, and the limit groove is located between the outer side of the left recessed area and the outer wall surface of the left mold base; and a limit stop block is assembled at the right mold base relative to the limit groove, and the limit stop block can be accommodated and engaged at the limit groove, so as to greatly improve the bonding strength between the left mold base and the right mold base. According to the hollow blow molding mold structure of one of the items 1 to 6 of the patent application scope, a left side fixing portion is assembled at the left side mold base, and a right side fixing portion is assembled at the right side mold base relative to the left side fixing portion, and the left side fixing portion and the right side fixing portion are connected and locked into a whole by the locking action of the locking unit to enhance the bonding strength between the left side mold base and the right side mold base. According to the hollow blow molding mold structure of one of the items 1 to 6 of the patent application scope, a size mold base can be sandwiched between the left mold base and the right mold base, so that at least one or more size mold bases can be sandwiched in the maximum movable stroke between the left mold base and the right mold base, and the size can be adjusted steplessly in the maximum movable stroke. At the same time, the mold size can be directly increased or decreased on the machine, so that the discharge die head of the machine can increase or decrease with the increase or decrease of the mold size, so as to ensure that the distance between the discharge die head and the feed port of the mold remains fixed, so as to greatly reduce the generation of residual or waste materials, thereby shortening the downtime and labor costs required for replacing the mold size to increase or decrease. According to the hollow blow molding mold structure in item 9 of the patent application, the size mold base at least includes an inner concave chamber, a first limit groove for fixing a limit block, a second limit groove for accommodating and engaging one end of another limit block assembled at the right mold base, a left limit portion aligned with the left side fixing portion of the left mold base, a right limit portion aligned with the right side fixing portion of the right mold base, and a screw hole for locking one end of a locking bolt that has passed through the fixing plate. According to the hollow blow molding mold structure of item 10 of the patent application, a limit groove is provided at the left mold base, and the limit groove is located between the outer side of the left concave area and the outer wall surface of the left mold base; and a limit stop block is formed at the side of the size mold base adjacent to the limit groove, and a second limit groove is formed at the other side of the size mold base, and another limit block is formed at the side of the right mold base adjacent to the second limit groove, so that the limit block and the other limit block can be respectively accommodated and engaged in the limit groove and the second limit groove, so as to greatly improve the three-way combination strength between the left mold base, the size mold base and the right mold base. According to the hollow blow molding mold structure of item 10 of the patent application, a left side fixing portion is assembled at the left side mold base, a left stop portion is formed at the side of the size mold base adjacent to the left side fixing portion, and a right stop portion is formed at the other side of the size mold base, and a positioning side portion is assembled at the side of the right side mold base adjacent to the right stop portion, and the left side fixing portion and the left stop portion, as well as the right stop portion and the right side fixing portion are respectively locked and combined into a whole by the locking action of the locking unit, so as to improve the three-way bonding strength between the left side mold base, the size mold base and the right side mold base. According to the hollow blow molding mold structure in item 10 of the patent application, a fixing plate is assembled on the back of the size mold base, and the fixing plate can be assembled and fixed with a fixed frame plate and the telescopic device to form a whole; and the fixing plate at least includes a through hole for one end of the locking bolt to pass through, a screw hole for locking one end of a long bolt, and a fixing portion for assembling one end of the telescopic device.

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