Vacuum plastic uptake mold for thick sheet

Abstract

The utility model discloses a thick sheet vacuum plastic uptake mould, including bottom mould, side mould, drive device, bottom plate and drive mechanism, side mould is provided the top of bottom mould peripheral wall, side mould and bottom mould together enclose and form mould cavity, side mould close to mould cavity inner wall is provided with protruding part, drive device is provided bottom mould outer wall, bottom plate is located bottom mould below, drive mechanism is located bottom mould bottom wall, and the bottom mould is located bottom mould bottom wall. The driving device can drive the bottom plate to be close to or away from the outer bottom of the bottom die, the bottom of the driving mechanism is arranged on the bottom plate, and the bottom of the side die is arranged on the top of the driving mechanism. The thick sheet vacuum plastic suction mold disclosed by the utility model is relatively simple in structure and lower in cost, and can be used for manufacturing plastic products with special shapes, and the appearance structures of the plastic products can meet the manufacturing requirements.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming molds, and in particular to a thick sheet vacuum forming mold. Background Technology

[0002] Vacuum forming molds are widely used in the manufacture of plastic packaging, daily necessities, product shells and other fields. They can be used to produce various plastic products, such as shells, trays, blister boxes and so on.

[0003] Some plastic products have unique shapes, such as stepped flanges that protrude from the inner sidewalls at the top of the sidewalls. It is very difficult to mold such plastic products in one step using existing vacuum forming molds during the vacuum forming process. If injection molding is used, the mold cost is not only high, but the shape and structure of the plastic product are also difficult to achieve. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a thick sheet vacuum forming mold.

[0005] According to one aspect of the present invention, a thick sheet vacuum forming mold is provided, comprising:

[0006] Bottom mold;

[0007] The side mold is located on the top of the peripheral wall of the bottom mold. The side mold and the bottom mold together enclose and form a mold cavity. The inner wall of the side mold near the mold cavity is provided with a protrusion.

[0008] The driving device is located on the outer wall of the bottom mold;

[0009] The base plate is located below the bottom mold, and the driving device can drive the base plate closer to or further away from the outer bottom of the bottom mold; and

[0010] The drive mechanism has its bottom mounted on the base plate, while the bottom of the side mold is located on top of the drive mechanism.

[0011] When the drive unit drives the base plate closer to the outer bottom of the bottom mold, the drive mechanism can simultaneously move the side mold away from the mold cavity in both the lateral and longitudinal directions.

[0012] When the drive unit drives the base plate away from the outer bottom of the bottom mold, the drive mechanism can drive the side mold to approach the mold cavity simultaneously in the lateral and longitudinal directions.

[0013] This utility model discloses a thick sheet vacuum forming mold. Before vacuum forming, the driving device drives the base plate away from the outer bottom of the bottom mold, and the driving mechanism drives the side mold to move closer to the mold cavity in both the horizontal and vertical directions. This allows the side mold and the bottom mold to enclose a vacuum-formable mold cavity. At this time, the protrusions on the side mold provide support for the forming of the stepped flange on the plastic product. After the heated and softened thick sheet is covered on the top of the mold cavity, it is vacuum-adsorbed and cooled. After forming, the protrusions on the inner wall of the side mold near the mold cavity can form a stepped flange on the side wall of the plastic product. When demolding is required, the driving device drives the base plate closer to the outer bottom of the bottom mold, and the driving mechanism drives the side mold to move away from the mold cavity in both the horizontal and vertical directions. The protrusions on the side mold separate from the stepped flange formed on the plastic product. At this time, the plastic product with the stepped flange can be easily removed from the mold cavity. This utility model discloses a thick sheet vacuum forming mold with a relatively simple structure and low cost. It can produce plastic products with special shapes, and the shape and structure of the plastic products can meet the manufacturing requirements.

[0014] Furthermore, the driving mechanism includes a driving rod and a support seat. The support seat is located at the bottom of the peripheral wall of the bottom mold. The support seat is provided with an inclined groove. The driving rod is accommodated in the inclined groove and passes through the peripheral wall of the bottom mold. The first end of the driving rod is located on the bottom plate, and the bottom of the side mold is located on the second end of the driving rod.

[0015] Therefore, when the driving device drives the base plate away from the outer bottom of the bottom mold, the base plate drives the driving rod to move away from the bottom mold simultaneously, and the driving rod slides obliquely along the inclined groove on the support seat. The driving rod can drive the side mold to move obliquely at the same time so that the side mold approaches the mold cavity simultaneously in the lateral and longitudinal directions, thereby enclosing the side mold and the bottom mold into a mold cavity that can be vacuum-formed. When the driving device drives the base plate to approach the outer bottom of the bottom mold, the base plate drives the driving rod to move away from the bottom mold simultaneously, and the driving rod slides obliquely along the inclined groove on the support seat. The driving rod can drive the side mold to move obliquely at the same time so that the side mold moves away from the mold cavity simultaneously in the lateral and longitudinal directions. The protrusion on the side mold separates from the stepped flange formed on the plastic product. At this time, the plastic product with the stepped flange can be smoothly removed from the mold cavity.

[0016] Furthermore, the bottom mold has a receiving cavity at the top of its peripheral wall, the side wall of the receiving cavity away from the mold cavity is inclined, the bottom of the side mold is received in the receiving cavity, the side wall of the side mold away from the mold cavity is inclined, and the second end of the drive rod passes through the peripheral wall of the bottom mold and extends out from the inner bottom of the receiving cavity.

[0017] Therefore, when the driving device drives the base plate away from the outer bottom of the bottom mold, the side wall of the side mold away from the mold cavity can move smoothly and obliquely along the side wall of the receiving cavity away from the mold cavity, so that the side mold moves smoothly towards the mold cavity in both the lateral and longitudinal directions. When the driving device drives the base plate towards the outer bottom of the bottom mold, the side wall of the side mold away from the mold cavity can move smoothly and obliquely along the side wall of the receiving cavity away from the mold cavity, so that the side mold moves smoothly away from the mold cavity in both the lateral and longitudinal directions.

[0018] Furthermore, the inclined groove is provided with a cavity, the drive rod is provided with a guide rail, a slider is slidably mounted on the guide rail, and the slider is fixed in the cavity.

[0019] Therefore, with the cooperation of the slider and the guide rail, the drive rod can slide smoothly along the inclined groove. Since the slider is fixed in the cavity, the drive rod will not come out of the inclined groove during the sliding process, ensuring the stability of the drive rod sliding.

[0020] Furthermore, each side of the cavity is provided with a sliding groove communicating with the cavity, and the guide rail is accommodated in the sliding groove.

[0021] Therefore, housing the guide rail in the groove can further improve the stability of the drive rod sliding in the inclined groove on the bearing seat.

[0022] Furthermore, the drive rod includes an integrally connected inclined rod portion and a connecting portion. The inclined rod portion is housed in an inclined groove, with its bottom located on the base plate and the bottom of the side mold located on the top of the connecting portion.

[0023] Therefore, the diagonal brace can be easily connected to the side mold through the connecting part.

[0024] Furthermore, the bottom of the side mold is provided with an insertion cavity, and the top of the connecting part is inserted and fixed in the insertion cavity.

[0025] Therefore, the connecting part can be securely installed with the side mold.

[0026] Furthermore, there are four driving devices, which are cylinders. The cylinder bodies of two cylinders are fixed on the outer wall of one side of the bottom mold, and the cylinder bodies of the other two cylinders are fixed on the outer wall of the other side of the bottom mold. The free end of the piston rod of the cylinder is fixed on the bottom plate.

[0027] Therefore, the base plate can be driven smoothly to move closer to or away from the bottom mold by four cylinders.

[0028] Furthermore, the side mold includes a first side mold, a second side mold, a third side mold, a fourth side mold, and a fifth side mold, and the protrusion includes a first protrusion, a second protrusion, a third protrusion, and a fourth protrusion. The first protrusion is located on the inner wall of the first side mold near the mold cavity, the second protrusion is located on the inner wall of the second side mold near the mold cavity, the third protrusion is located on the inner wall of the third side mold near the mold cavity, and the fourth protrusion is located on the inner wall of the fifth side mold near the mold cavity.

[0029] When the drive device drives the base plate away from the outer bottom of the bottom mold, the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold sequentially abut against each other end to end and together with the bottom mold, form a mold cavity.

[0030] When the driving device drives the base plate away from the outer bottom of the bottom mold, the fourth protrusion, the first protrusion, the second protrusion, and the third protrusion abut against each other in sequence.

[0031] Therefore, the first side mold, the second side mold, the third side mold, the fourth side mold, the fifth side mold, and the bottom mold can jointly enclose and form a mold cavity to produce plastic products of corresponding shapes. The fourth protrusion, the first protrusion, the second protrusion, and the third protrusion can jointly provide support for the forming of the corresponding stepped flange on the plastic product. After cooling and molding, the fourth protrusion, the first protrusion, the second protrusion, and the third protrusion can jointly form a continuous stepped flange on the side wall of the plastic product.

[0032] Furthermore, it also includes a guide seat, which surrounds the periphery of the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold. The inner wall of the guide seat near the mold cavity is inclined, and the outer walls of the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold away from the mold cavity are inclined and in contact with the inner wall of the guide seat near the mold cavity.

[0033] Therefore, the guide seat can limit and guide the movement of the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold in the lateral and longitudinal directions, ensuring that the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold can smoothly approach or move away from the mold cavity in the lateral and longitudinal directions. Attached Figure Description

[0034] Figure 1 This utility model describes the structure of a plastic product formed by vacuum forming using a thick sheet vacuum forming mold.

[0035] Figure 2 This is a schematic diagram of the structure of a thick sheet vacuum forming mold according to the present invention;

[0036] Figure 3 for Figure 2 A schematic diagram of the structure of a thick sheet vacuum forming mold from another perspective;

[0037] Figure 4 for Figure 2 A schematic diagram showing the disassembled structure of a thick sheet vacuum forming mold;

[0038] Figure 5 for Figure 3 A schematic diagram showing the disassembled structure of a thick sheet vacuum forming mold;

[0039] Figure 6 for Figure 2 The diagram shows the structure of the thick sheet vacuum forming mold after the guide seat is hidden.

[0040] Figure 7 for Figure 6The diagram shows the structure of a thick sheet vacuum forming mold after the side molds are hidden.

[0041] Figure 8 for Figure 4 A schematic diagram showing the disassembled structure of the drive mechanism in the thick sheet vacuum forming mold;

[0042] Figure 9 for Figure 8 A schematic diagram of the drive mechanism from another perspective;

[0043] Figure 10 for Figure 2 The diagram shows the usage status of a thick sheet vacuum forming mold.

[0044] Figure 11 for Figure 10 The diagram shows the demolding state of a thick sheet vacuum forming mold. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0046] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. It should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components.

[0047] See Figure 1The plastic product 100 has a rather special shape. The top of the side wall of the plastic product 100 has a stepped flange 101 that protrudes from the inner side wall of the plastic product 100. The stepped flange 101 is not closed. There is no stepped flange design at one corner of the plastic product 100. It is very difficult to use the existing vacuum forming mold to form the plastic product 100 in one demolding process during the vacuum forming process.

[0048] See Figures 2 to 9 A thick sheet vacuum forming mold includes a bottom mold 1, a side mold 2, a driving device 3, a base plate 4, a driving mechanism 5, and a guide seat 6.

[0049] Side mold 2 is installed on the top of the peripheral wall of bottom mold 1. Side mold 2 and bottom mold 1 can jointly enclose and form a mold cavity. Specifically: see Figure 2 , Figures 4 to 6 The side mold 2 includes a first side mold 201, a second side mold 202, a third side mold 203, a fourth side mold 204, and a fifth side mold 205. The top of the peripheral wall of the bottom mold 1 is formed with five receiving cavities 11. The shape, size, and position of the five receiving cavities 11 correspond to the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205, respectively. The bottoms of the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 are respectively housed in the five receiving cavities 11. (See reference...) Figure 2 and Figure 6 The first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204 and the fifth side mold 205 can be joined end to end and together with the bottom mold 1 to form the mold cavity 10.

[0050] See Figure 6 and Figure 7 Each accommodating cavity 11 has an inclined sidewall away from the mold cavity 10. The sidewalls of the side molds 2 away from the mold cavity 10 are also inclined. The outer walls of the first side mold 201, second side mold 202, third side mold 203, fourth side mold 204, and fifth side mold 205 of the side molds 2 away from the mold cavity 10 are all inclined and contact the inner walls of the corresponding accommodating cavities 11 away from the mold cavity 10. The outer walls of the first side mold 201, second side mold 202, third side mold 203, fourth side mold 204, and fifth side mold 205 away from the mold cavity 10 can smoothly slide obliquely along the corresponding sidewalls of the accommodating cavities 11 away from the mold cavity, thereby allowing the first side mold 201, second side mold 202, third side mold 203, fourth side mold 204, and fifth side mold 205 to smoothly approach or move away from the mold cavity 10 in both the transverse and longitudinal directions. Figure 6 (The state shown).

[0051] The inner wall of the side mold 2 near the mold cavity 10 has a protrusion formed, specifically, see [reference needed]. Figure 2 , Figures 4 to 6 The protrusions include a first protrusion 22, a second protrusion 23, a third protrusion 24, and a fourth protrusion 25. The first protrusion 22 is disposed on the inner wall of the first side mold 201 near the mold cavity 10 and located at the top of the inner wall. The first protrusion 22 is integrally formed with the first side mold 201. The second protrusion 23 is disposed on the inner wall of the second side mold 202 near the mold cavity 10 and located at the top of the inner wall. The second protrusion 23 is integrally formed with the second side mold 202. The third protrusion 24 is disposed on the second side mold 202 near the mold cavity 10 and located at the top of the inner wall. The third side mold 203 is located on the inner wall of the cavity 10 near the top of the inner wall. The third protrusion 24 is integrally formed with the third side mold 203. The fourth protrusion 25 is located on the inner wall of the fifth side mold 205 near the cavity and at the top of the inner wall. The fourth protrusion 25 is integrally formed with the fifth side mold 205. When the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 are joined end to end and together with the bottom mold 1 to form the cavity 10, ( Figure 6 (As shown in the diagram), the fourth protrusion 25, the first protrusion 22, the second protrusion 23, and the third protrusion 24 abut together end to end. The first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, the fifth side mold 205, and the bottom mold 1 can jointly enclose and form the mold cavity 10 to produce plastic products of corresponding shapes. The fourth protrusion 25, the first protrusion 22, the second protrusion 23, and the third protrusion 24 can jointly provide support for the forming of the corresponding stepped flange on the plastic product. After cooling and molding, the fourth protrusion 25, the first protrusion 22, the second protrusion 23, and the third protrusion 24 can jointly form a continuous stepped flange on the side wall of the plastic product.

[0052] See Figure 2 , Figure 4 and Figure 5The guide seat 6 is fixed (e.g., locked with screws) to the bottom mold 1. The guide seat 6 surrounds the periphery of the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205. The inner wall of the guide seat 6 near the mold cavity 10 is inclined. The inner wall of the guide seat 6 near the mold cavity 10 is adapted to the outer wall of the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 away from the mold cavity 10. The first side mold 201, the second side mold 202, the third side mold 205... 203. The outer walls of the fourth side mold 204 and the fifth side mold 205 away from the mold cavity 10 contact the inner wall of the guide seat 6 near the mold cavity 10. The guide seat 6 can provide limiting and guiding functions for the movement of the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 in the lateral and longitudinal directions, ensuring that the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 can smoothly approach or move away from the mold cavity 10 in the lateral and longitudinal directions.

[0053] See Figures 2 to 7 There are four drive devices 3. The drive devices 3 are cylinders. The cylinder bodies of two cylinders are fixed on the outer wall of one side of the bottom mold 1, and the cylinder bodies of the other two cylinders are fixed on the outer wall of the other side of the bottom mold 1. The free end of the piston rod of the cylinder is fixed on the bottom plate 4. The bottom plate 4 is located below the bottom mold 1. The four drive devices 3 can drive the bottom plate 4 to move closer to or away from the outer bottom of the bottom mold 1 together. The bottom plate 4 can be driven to move smoothly closer to or away from the bottom mold 1 through the four cylinders.

[0054] When the driving device 3 drives the base plate 4 to approach the outer bottom of the bottom mold 1, the driving mechanism 5 can simultaneously drive the side mold 2 to move away from the mold cavity 10 in both the lateral and longitudinal directions. Specifically: see [link to relevant documentation]. Figures 2 to 9 The number of drive mechanisms 5 is nine. Each drive mechanism 5 includes a drive rod 51 and a support base 52. The drive rod 51 includes an integrally connected inclined rod portion 5101 and a connecting portion 5102. (See reference...) Figure 8 and Figure 9The support base 52 has a sloping groove 521 formed on it, and a cavity 522 is formed in the sloping groove 521. Sliding grooves 523 communicating with the cavity 522 are formed on both sides of the cavity 522. A guide rail 511 is mounted on the sloping rod portion 5101 of the drive rod 51. A slider 512 is slidably mounted on the guide rail 511. The slider 512 is fixed in the cavity 522 in the sloping groove 521. The guide rail 511 is accommodated in the sliding groove 523. The sloping rod portion 5101 is accommodated in the sloping groove 521. The first end of the drive rod 51, i.e., the bottom of the sloping rod portion 5101, is fixed to the base plate 4. The accommodating cavity 11 on the bottom mold 1... The inner bottom of each cavity 11 has through holes 12 formed therein. The number and position of the through holes 12 in each cavity 11 are adapted to the number of drive mechanisms 5 corresponding to the side molds 2 installed in the cavity 11. The bottoms of the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 are all formed with insertion cavities 21. The number and position of the insertion cavities 21 are adapted to the number of drive mechanisms 5 corresponding to the side molds 2. The connecting part 5102 of each drive rod 51 passes through the corresponding through hole 12 on the peripheral wall of the bottom mold 1 and extends out from the inner bottom of the cavity 11. Figure 7As shown), the top of the connecting part 5102, which extends from the bottom of the accommodating cavity 11, is inserted and fixed into the insertion cavity 21 at the bottom of the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205. The bottom of the bottom mold 1 has eight mounting cavities 13. The bearing seats 52 are inserted and fixed into the mounting cavities 13. Two bearing seats 52 are inserted and fixed into one mounting cavity 13, which corresponds to the fifth side mold 205. 05 is driven by two driving mechanisms 5, and the other seven bearing seats 52 are respectively inserted and fixed in the other seven mounting cavities 13. The first side mold 201 corresponds to two driving mechanisms 5 and is driven by two driving mechanisms 5. The second side mold 202 corresponds to two driving mechanisms 5 and is driven by two driving mechanisms 5. The third side mold 203 corresponds to two driving mechanisms 5 and is driven by two driving mechanisms 5. The fourth side mold 204 corresponds to one driving mechanism 5 and is driven by one driving mechanism 5.When the driving device 3 drives the base plate 4 away from the outer bottom of the bottom mold 1, the base plate 4 drives the driving rod 51 to move away from the bottom mold 1 simultaneously. The inclined rod portion 5101 of the driving rod 51 slides obliquely along the inclined groove 521 on the bearing seat 52 under the cooperation of the guide rail 511 and the slider 512. The connecting portions 5102 of the nine driving rods 51 can correspondingly drive the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 to move obliquely and synchronously, so that the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 respectively and simultaneously... The side molds 201, 202, 203, 204, and 205 are positioned horizontally and vertically close to the mold cavity 10, so that the first side mold 201, second side mold 202, third side mold 203, fourth side mold 204, and fifth side mold 205 abut together end to end and together with the bottom mold 1 to form a vacuum-formable mold cavity 10. The fourth protrusion 25, first protrusion 22, second protrusion 23, and third protrusion 24 abut together end to end. The first side mold 201, second side mold 202, third side mold 203, fourth side mold 204, fifth side mold 205, and bottom mold 1 can together enclose and form the mold cavity 10 to produce plastic products of corresponding shapes. The fourth protrusion 25, first protrusion 22, second protrusion 23, and third protrusion 24 abut together end to end. Part 22, the second protrusion 23, and the third protrusion 24 can jointly provide support for the forming of corresponding stepped flanges on the plastic product. After cooling and molding, the fourth protrusion 25, the first protrusion 22, the second protrusion 23, and the third protrusion 24 can jointly form a continuous stepped flange on the side wall of the plastic product. When the driving device 3 drives the base plate 4 close to the outer bottom of the bottom mold 1, the base plate 4 drives the driving rod 51 to simultaneously approach the bottom mold 1, and the inclined rod part 5101 of the driving rod 51 slides obliquely along the inclined groove 521 on the support seat 52 under the cooperation of the guide rail 511 and the slider 512. The connecting part 5102 of the drive rod 51 can drive the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 to move obliquely in sync, so that the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 move away from the mold cavity 10 in the lateral and longitudinal directions respectively and simultaneously. The fourth protrusion 25, the first protrusion 22, the second protrusion 23, and the third protrusion 24 separate from the stepped flange formed on the plastic product. At this time, the plastic product with the stepped flange can be smoothly removed from the mold cavity 10.Furthermore, with the cooperation of the slider 512 and the guide rail 511, the inclined rod portion 5101 of the drive rod 51 can slide smoothly along the inclined groove 521. Since the slider 512 is fixed in the cavity 522, the inclined rod portion 5101 of the drive rod 51 will not come out of the inclined groove 521 during the sliding process, ensuring the stability of the sliding of the inclined rod portion 5101 of the drive rod 51. The guide rail 511, housed in the sliding groove 523, can further improve the stability of the sliding of the inclined rod portion 5101 of the drive rod 51 in the inclined groove 521 on the bearing seat 52. At the same time, the inclined rod portion 5101 of the drive rod 51 can be easily connected to the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 through the connecting portion 5102.

[0055] See Figure 2 and Figure 3 Under the driving action of the driving device 3, the nine driving mechanisms 5 work synchronously to ensure that the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 move obliquely to approach or move away from the mold cavity 10.

[0056] See 10 and Figure 11 The first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, the fifth side mold 205, and the bottom mold 1 together enclose a vacuum-formable cavity 10. Figure 2 As shown), plastic products 100 can be vacuum-formed in the mold cavity 10.

[0057] See Figures 2 to 11 In this utility model, before vacuum forming, four driving devices 3 drive the base plate 4 away from the outer bottom of the bottom mold 1, and nine driving mechanisms 5 simultaneously drive the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 to approach the mold cavity 10 in both the horizontal and vertical directions. This causes the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 to abut each other end to end and enclose the bottom mold 1 to form a vacuum-formable mold cavity 10. At this time, the fourth protrusion 25 on the fifth side mold 205... The first protrusion 22 on the first side mold 201, the second protrusion 23 on the second side mold 202, and the third protrusion 24 on the third side mold 203 provide support for the molding of the stepped flange on the plastic product 100. After the heated and softened sheet covers the top of the mold cavity 10, it is vacuum adsorbed and cooled to form a stepped flange on the side wall of the plastic product 100. Figure 10As shown), when demolding is required, the four drive devices 3 drive the base plate 4 closer to the outer bottom of the bottom mold 1, and the nine drive mechanisms 5 simultaneously drive the first side mold 201, the second side mold 202, the third side mold 203, the fourth side mold 204, and the fifth side mold 205 to move away from the mold cavity 10 in both the horizontal and vertical directions. The fourth protrusion 25 on the fifth side mold 205, the first protrusion 22 on the first side mold 201, the second protrusion 23 on the second side mold 202, and the third protrusion 24 on the third side mold 203 separate from the stepped flange 101 formed on the side wall of the plastic product 100. Figure 11 As shown), at this time, the plastic product 100 with stepped flange can be smoothly separated from the mold cavity 10. The thick sheet vacuum forming mold of this utility model has a relatively simple structure and low cost. It can make plastic products with special shapes, and the shape and structure of the plastic products can meet the manufacturing requirements.

[0058] The above descriptions are merely some embodiments of this utility model, intended to illustrate the technical means of this utility model, and are not intended to limit the technical scope of this utility model. Any obvious improvements made to this utility model by those skilled in the art in conjunction with existing common knowledge fall within the protection scope of this utility model.

Claims

1. A thick sheet vacuum forming mold, characterized in that, include: Bottom mold; A side mold is provided on the top of the peripheral wall of the bottom mold. The side mold and the bottom mold together enclose and form a mold cavity. A protrusion is provided on the inner wall of the side mold near the mold cavity. The driving device is located on the outer wall of the bottom mold; A base plate, located below the bottom mold, is driven by a driving device to move the base plate closer to or away from the outer bottom of the bottom mold. and The drive mechanism has its bottom mounted on the base plate, and the bottom of the side mold is mounted on the top of the drive mechanism. When the drive unit drives the base plate closer to the outer bottom of the bottom mold, the drive mechanism can simultaneously move the side mold away from the mold cavity in both the lateral and longitudinal directions. When the drive unit drives the base plate away from the outer bottom of the bottom mold, the drive mechanism can drive the side mold to approach the mold cavity simultaneously in the lateral and longitudinal directions.

2. The thick sheet vacuum forming mold according to claim 1, characterized in that, The driving mechanism includes a driving rod and a support seat. The support seat is located at the bottom of the peripheral wall of the bottom mold. The support seat has an inclined groove, the driving rod is accommodated in the inclined groove, and the driving rod passes through the peripheral wall of the bottom mold. The first end of the driving rod is located on the bottom plate, and the bottom of the side mold is located on the second end of the driving rod.

3. The thick sheet vacuum forming mold according to claim 2, characterized in that, The bottom mold has a receiving cavity at the top of its peripheral wall. The side wall of the receiving cavity away from the mold cavity is inclined. The bottom of the side mold is housed in the receiving cavity. The side wall of the side mold away from the mold cavity is inclined. The second end of the drive rod passes through the peripheral wall of the bottom mold and extends out from the bottom of the receiving cavity.

4. The thick sheet vacuum forming mold according to claim 2, characterized in that, The inclined groove has a cavity, the drive rod has a guide rail, and a slider slides on the guide rail and is fixed in the cavity.

5. The thick sheet vacuum forming mold according to claim 4, characterized in that, The cavity has sliding grooves on both sides that communicate with it, and the guide rail is housed in the sliding grooves.

6. The thick sheet vacuum forming mold according to claim 2, characterized in that, The drive rod includes an integrally connected inclined rod portion and a connecting portion. The inclined rod portion is housed in an inclined groove, with its bottom resting on a base plate and the bottom of the side mold resting on the top of the connecting portion.

7. The thick sheet vacuum forming mold according to claim 6, characterized in that, The bottom of the side mold is provided with an insertion cavity, and the top of the connecting part is inserted and fixed in the insertion cavity.

8. The thick sheet vacuum forming mold according to claim 1, characterized in that, The number of driving devices is four. The driving devices are cylinders. The cylinder bodies of two cylinders are fixed on the outer wall of one side of the bottom mold, and the cylinder bodies of the other two cylinders are fixed on the outer wall of the other side of the bottom mold. The free end of the piston rod of the cylinder is fixed on the bottom plate.

9. The thick sheet vacuum forming mold according to any one of claims 1 to 8, characterized in that, The side molds include a first side mold, a second side mold, a third side mold, a fourth side mold, and a fifth side mold. The protrusions include a first protrusion, a second protrusion, a third protrusion, and a fourth protrusion. The first protrusion is located on the inner wall of the first side mold near the mold cavity; the second protrusion is located on the inner wall of the second side mold near the mold cavity; the third protrusion is located on the inner wall of the third side mold near the mold cavity; and the fourth protrusion is located on the inner wall of the fifth side mold near the mold cavity. When the drive device drives the base plate away from the outer bottom of the bottom mold, the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold sequentially abut against each other end to end and together with the bottom mold, form a mold cavity. When the driving device drives the base plate away from the outer bottom of the bottom mold, the fourth protrusion, the first protrusion, the second protrusion, and the third protrusion abut against each other in sequence.

10. The thick sheet vacuum forming mold according to claim 9, characterized in that, It also includes a guide seat, which surrounds the periphery of the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold. The inner wall of the guide seat near the mold cavity is inclined, and the outer walls of the first side mold, the second side mold, the third side mold, the fourth side mold, and the fifth side mold away from the mold cavity are inclined and in contact with the inner wall of the guide seat near the mold cavity.

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