An all-electric hollow blow molding machine

Abstract

The present application relates to the technical field of blow molding machine, especially to a full-electric hollow blow molding machine, comprising a blow molding main machine, a first mold and a second mold, the first mold and the second mold are both installed on the blow molding main machine, the first mold is internally provided with a first cavity, the second mold is internally provided with a second cavity, the cavity mouth of the first cavity is provided with a mold closing strip extending along the edge thereof, the cavity mouth of the second cavity is provided with a mold closing groove extending along the edge of the cavity mouth of the second cavity, the mold closing groove is communicated with the second cavity; when the first mold and the second mold are closed, the first cavity and the second cavity are communicated, the mold closing strip is inserted into the mold closing groove and is in contact with the groove bottom of the mold closing groove; wherein the edge of the cavity mouth of the first cavity and the second cavity is both a continuous S-shaped line. The plastic product produced by the full-electric hollow blow molding machine has a stronger structural strength at the mold closing line than the plastic product produced by the existing blow molding machine at the corresponding position.

Description

Technical Field

[0001] This invention relates to the field of blow molding machine technology, and specifically to an all-electric hollow blow molding machine. Background Technology

[0002] In existing blow molding processes used for plastic product manufacturing, the blow molds cannot achieve a completely closed effect. As a result, there will be a small amount of glue leakage at the mold closing position, which will cause waste material to stick to the produced plastic products. The stuck waste material needs to be removed in the later stage.

[0003] After blow molding, a noticeable parting line forms on the surface of the plastic product. Furthermore, the areas where waste material adheres often coincide with this parting line. The presence of this parting line affects the structural strength of the plastic product; the structural strength at the parting line is weaker than in other areas. Moreover, uneven material leakage at the parting line during mold closing further weakens the structural strength of the plastic product at that location. Additionally, air pockets are more likely to form at the parting line, further compromising its structural strength and resulting in a lower yield rate. Finally, the parting line also affects the appearance of the plastic product.

[0004] Especially when blow molding machines are used to blow mold hollow preforms, some preforms are easily trapped between the two molds during the mold closing process, resulting in waste material. This makes the gap between the molds larger after mold closing, causing the plastic products produced to be not firmly connected at the mold parting line, resulting in lower structural strength of the plastic products. Summary of the Invention

[0005] This invention provides a fully electric hollow blow molding machine, which produces plastic products with stronger structural strength at the parting line compared to plastic products produced by existing blow molding machines at the corresponding positions.

[0006] The present invention provides a fully electric hollow blow molding machine with the following technical solution:

[0007] A fully electric hollow blow molding machine includes a blow molding main unit, a first mold and a second mold. The first mold and the second mold are both installed on the blow molding main unit. The first mold has a first cavity and the second mold has a second cavity. The opening of the first cavity is provided with a mold closing strip extending along its edge. The opening of the second cavity is provided with a mold closing groove extending along the edge of the opening of the second cavity. The mold closing groove communicates with the second cavity.

[0008] When the first mold and the second mold are closed, the first cavity and the second cavity are interconnected, and the mold closing strip is inserted into the mold closing groove and contacts the bottom of the mold closing groove; wherein, the edges of the openings of the first cavity and the second cavity are both continuous S-shaped lines.

[0009] Furthermore, one end face of the mold clamping strip that extends into the mold clamping groove is a first inclined surface, and the bottom of the mold clamping groove is a second inclined surface that matches the first inclined surface. The side edge of the second inclined surface closer to the second cavity is closer to the first mold than the side edge of the second inclined surface farther from the second cavity.

[0010] Furthermore, the second mold is provided with a cutter, which is disposed on the side of the second mold where the second cavity is opened. The cutter extends along the edge of the cavity opening of the second cavity and is located on the side of the mold closing groove away from the second cavity.

[0011] Furthermore, the end face of the cutter away from the second mold is a third inclined surface, the end line of the third inclined surface near the second cavity is the cutting edge, and the end line of the first inclined surface away from the first cavity is the cutting edge. The cutting edge and the cutting edge are adapted to each other.

[0012] During the process of closing the first and second molds, the cutting edge of the cutter slides past the cutting edge of the mold closing strip, which can squeeze and cut off the waste material generated during mold closing.

[0013] Furthermore, the cutter is a steel blade.

[0014] Furthermore, a waste material cavity is provided on the first mold, the waste material cavity is arranged outside the first cavity, and the side wall of the waste material cavity near the first cavity is the side wall of the mold closing strip away from the first cavity.

[0015] Furthermore, the extension direction of the waste material cavity is parallel to the extension direction of the mold clamping strip.

[0016] Furthermore, a positioning component is provided between the first mold and the second mold. The positioning component includes a pin and a pin hole. The pin is installed on the side of the second mold where the second cavity is opened, and the pin hole is opened on the side of the first mold where the first cavity is opened. The pin and the pin hole are adapted to each other.

[0017] Furthermore, multiple pins and pin holes are provided. The multiple pins are evenly distributed along the edge extension direction of the second cavity, and the multiple pin holes are evenly distributed along the edge extension direction of the first cavity. When the first mold and the second mold are closed, the multiple pins are inserted into the corresponding multiple pin holes.

[0018] Furthermore, a first air injection port is provided at one end of the first cavity, and a second air injection port is provided at one end of the second cavity. When the first mold and the second mold are closed, the first air injection port and the second air injection port form an air blowing port. The air blowing pipe of the blow molding machine is inserted into the air blowing port to blow mold the material placed between the first cavity and the second cavity.

[0019] The beneficial effects of this invention are:

[0020] The present invention discloses a fully electric hollow blow molding machine in which the first cavity and the second cavity are connected during the mold closing process, and the mold closing strip on the first mold can be gradually inserted into the mold closing groove on the second mold and finally abut against the bottom of the mold closing groove.

[0021] When the mold clamping strip is pressed against the bottom of the mold clamping groove, air is blown into the parison through the air blowing pipe on the blow molding machine, which can complete the production of plastic parison into plastic finished product;

[0022] In this invention, the parting line generated on the preform when the first mold and the second mold are closed is arranged in an S-shape due to the influence of the parting strip and the parting groove. Compared with the straight parting line on existing plastic products, the S-shaped parting line is longer. The longer parting line means that when the first mold and the second mold press the preform into a finished product, the part of the preform located in the first cavity and the part of the preform located in the second cavity approach each other and stick together, the adhesion length is longer and the contact area during adhesion is larger. The larger adhesion area makes the structural strength of the plastic product at the parting line position higher.

[0023] Furthermore, when the waste material of the preform is removed by the cutter, the preform portion in the first cavity and the preform portion in the second cavity can be bonded together. The joint line formed after bonding is misaligned with the parting line left on the preform when the first mold and the second mold are closed, so that the structural strength at the parting line is higher when the preform is processed into a plastic finished product.

[0024] Furthermore, since the cutter is S-shaped, when the cutter removes the blank waste, it can act like scissors on the waste, starting from a certain point on the waste and then gradually completing the removal of the waste, ensuring that the waste can be completely removed. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an all-electric hollow blow molding machine provided in an embodiment of the present invention;

[0027] Figure 2 This is a schematic cross-sectional view of the first mold side of an all-electric hollow blow molding machine provided in an embodiment of the present invention;

[0028] Figure 3 This is a schematic cross-sectional view of the second mold of an all-electric hollow blow molding machine provided in an embodiment of the present invention.

[0029] Figure 4 This is a top view of the cross-sectional structure of the first and second molds of an all-electric hollow blow molding machine provided in an embodiment of the present invention, before the first and second molds are closed.

[0030] Figure 5 for Figure 4 A magnified structural diagram of part A in the middle;

[0031] Figure 6 This is a top view of the cross-sectional structure of the first and second molds of an all-electric hollow blow molding machine provided in an embodiment of the present invention, when the first and second molds are closed.

[0032] Figure 7 for Figure 6 A magnified structural diagram of part B in the middle section;

[0033] Figure 8 A top view of the cross-sectional structure of the first and second molds of an all-electric hollow blow molding machine provided in an embodiment of the present invention when the first and second molds are closed.

[0034] Figure 9 for Figure 8 A magnified structural diagram of section C;

[0035] Figure 10 This is a schematic diagram of the side structure of the preform after blow molding is completed using an all-electric hollow blow molding machine, as provided in an embodiment of the present invention.

[0036] Figure 11 for Figure 10 A magnified structural diagram of part D in the middle.

[0037] In the diagram: 100, blow molding machine; 110, air blowing pipe; 200, first mold; 210, first cavity; 211, first air injection port; 220, mold closing strip; 221, first inclined surface; 2211, cutting edge end; 230, waste material cavity; 300, second mold; 310, second cavity; 311, second air injection port; 320, mold closing groove; 321, second inclined surface; 400, cutter; 410, third inclined surface; 411, cutting edge end; 510, pin; 610, mold parting line; 620, joint line. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They 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, and therefore should not be construed as limiting the invention.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] like Figures 1 to 11 As shown in the figure, an embodiment of the present invention provides a fully electric hollow blow molding machine, including a blow molding main unit 100, a first mold 200, and a second mold 300. The blow molding main unit 100 can be a hollow blow molding machine driven by electricity. The first mold 200 and the second mold 300 are molds installed on the blow molding main unit 100. After the first mold 200 and the second mold 300 close the preform, they cooperate with the air blowing pipe 110 on the blow molding main unit 100 to produce the corresponding product.

[0042] In this invention, a first cavity 210 is formed on the first mold 200, and a second cavity 310 is formed on the second mold 300. A mold-closing strip 220 extending along the edge of the cavity opening of the first cavity 210 is provided, and a mold-closing groove 320 extending along the edge of the cavity opening of the second cavity 310 is formed at the cavity opening, and the mold-closing groove 320 communicates with the second cavity 310.

[0043] When the first mold 200 and the second mold 300 are closed, the first cavity 210 and the second cavity 310 are interconnected, and the mold closing strip 220 at the opening of the first cavity 210 is inserted into the mold closing groove 320 on the second cavity 310. The end of the mold closing strip 220 away from the first mold 200 extends into the mold closing groove 320 and contacts the bottom of the mold closing groove 320.

[0044] Furthermore, in this invention, the edges of the openings of both the first cavity 210 and the second cavity 310 are continuous S-shaped lines, and the S-shaped edge of the opening of the first cavity 210 matches the S-shaped edge of the opening of the second cavity 310. This results in the mold-closing strip 220 located at the opening of the first cavity 210 being an S-shaped extending structural member, and the mold-closing groove 320 on the second mold 300 being an S-shaped groove that matches the S-shaped extending mold-closing strip 220.

[0045] When the first mold 200 and the second mold 300 of the present invention are closed, the S-shaped mold closing strip 220 can be inserted into the S-shaped mold closing groove 320, and an S-shaped mold closing line 610 can be generated on the blank. The S-shaped mold closing line 610 is not only longer than the conventional straight mold closing line 610, but also has a larger contact area and a deeper contact depth when the blanks in the first mold 200 and the second mold 300 are closed. The larger contact area and contact depth indicate that the structural strength at the mold closing line 610 is stronger after the two molds are closed.

[0046] The operating principle of this invention is as follows:

[0047] First, the preform to be processed is placed between the first mold 200 and the second mold 300. Then, the air blowing pipe 110 on the blow molding host 100 is inserted into the preform. After that, the first mold 200 and the second mold 300 are closed by the blow molding host 100.

[0048] During the mold closing process, the first cavity 210 and the second cavity 310 are connected and correspond to each other, and the mold closing strip 220 on the first mold 200 can be gradually inserted into the mold closing groove 320 on the second mold 300 and finally abut against the bottom of the mold closing groove 320.

[0049] When the mold clamping strip 220 abuts against the bottom of the mold clamping groove 320, air is blown into the preform through the air blowing pipe 110, thereby completing the production process from plastic preform to finished plastic product.

[0050] The finished plastic product has a parting line 610 on its side wall. Since both the parting strip 220 and the parting groove 320 are arranged in an S-shape, the parting line 610 formed on the finished plastic product is S-shaped. Compared with the existing parting line 610 arranged in a straight line on the finished plastic product, the parting line 610 in the plastic product produced by the present invention is longer. The longer parting line 610 means that when the first mold 200 and the second mold 300 press the preform into the finished product, the part of the preform located in the first cavity 210 and the part of the preform located in the second cavity 310 approach and stick to each other. Not only is the sticking length longer, but the contact area and contact depth are also larger. The larger contact area and contact depth make the structural strength of the plastic product at the parting line 610 position higher.

[0051] It should be noted that this invention is a fully electric hollow blow molding machine, belonging to the category of hollow blow molding machines. Hollow blow molding machines typically produce large, hollow preforms. Before blow molding the preform, the molds of the hollow blow molding machine need to be closed. During the mold closing process, the two molds can extrude and close the preform. After the two molds close the preform, air is blown into the cavity through an air pipe, ultimately completing the blow molding of the preform.

[0052] In some embodiments, one end of the mold clamping strip 220 that extends into the mold clamping groove 320 is a first inclined surface 221, and the bottom of the mold clamping groove 320 is a second inclined surface 321 that is adapted to the first inclined surface 221. The side edge of the second inclined surface 321 that is closer to the second cavity 310 is closer to the first mold 200 than the side edge of the second inclined surface 321 that is farther away from the second cavity 310.

[0053] In this embodiment, when the first mold 200 and the second mold 300 are closed, the mold closing strip 220 penetrates into the mold closing groove 320. During the penetration process, the first inclined surface 221 on the mold closing strip 220 can push the blank material sandwiched between the mold closing strip 220 and the mold closing groove 320 into the mold closing groove 320. Under the pushing action of the first inclined surface 221, the blank material can be pushed towards the second cavity 310, thereby enabling the blank material pushed into the mold closing groove 320 to enter the second cavity 310 from the mold closing groove 320.

[0054] When the mold clamping strip 220 fully enters the corresponding mold clamping groove 320 and contacts the bottom of the mold clamping groove 320, that is, when the first mold 200 and the second mold 300 complete the mold closing, the preform material pushed out of the mold clamping groove 320 by the mold clamping strip 220 can accumulate at the mold closing point of the first mold 200 and the second mold 300. After the preform is blow-molded, a mold closing line 610 is generated at the mold closing point of the first mold 200 and the second mold 300. The preform material pushed out of the mold clamping groove 320 accumulates at the mold closing line 610 of the preform, which can make the plastic thickness at the mold closing line 610 of the produced plastic product thicker and the structural strength higher.

[0055] In some embodiments, a cutter 400 is provided on the side of the second cavity 310 on the second mold 300. The cutter 400 is located outside the second cavity 310 and extends along the edge of the cavity opening of the second cavity 310.

[0056] Specifically, the cutter 400 is made of steel, which has strong toughness and rigidity. Similar to the mold clamping strip 220 on the first mold 200, the cutter 400 is a continuous S-shaped structure. The cutter 400 is arranged around the second cavity 310, and its inner surface is flush with the outer wall of the mold clamping groove 320.

[0057] In this embodiment, during the mold closing process of the first mold 200 and the second mold 300, some blanks in the first cavity 210 and some blanks in the second cavity 310 can make contact in advance under the push of the corresponding cutter 400 and mold closing strip 220. During this contact, due to the continued mold closing of the first mold 200 and the second mold 300, extrusion occurs under the action of the cutter 400 and the mold closing strip 220. This extrusion causes some blanks in the first cavity 210 and the second cavity 310 to adhere together, forming a seam line 620. Subsequently, during the continued mold closing process, the cutter 400 can cut off the adhered plastic waste located outside the mold closing strip 220.

[0058] When the first mold 200 and the second mold 300 are closed, they form a parting line 610 on the plastic product. This parting line 610 is staggered from the seam line 620 formed during the previous mold-closing process by the extrusion adhesion between the preforms in the first cavity 210 and the second cavity 310. This ensures that the processed plastic product does not suffer from reduced structural strength due to the overlap of the parting line 610 and the seam line 620. Simultaneously, the staggered arrangement of the seam line 620 and the parting line 610 also prevents the two lines from overlapping and affecting the appearance of the plastic product.

[0059] In other embodiments, the end face of the cutter 400 away from the second mold 300 is a third inclined surface 410, the end line of the third inclined surface 410 near the second cavity 310 is the cutting edge 411, the end line of the first inclined surface 221 away from the first cavity 210 is the cutting edge 2211, and the cutting edge 411 and the cutting edge 2211 are adapted to each other.

[0060] During the mold closing process of the first mold 200 and the second mold 300, the cutting edge 411 of the cutter 400 slides over the cutting edge 2211 of the mold closing strip 220, which can squeeze and cut off the waste material generated during mold closing.

[0061] In this embodiment, as the cutting edge 411 of the cutter 400 and the cutting edge 2211 of the mold clamping strip 220 approach each other, they can compress a portion of the preform located between the cutter 400 and the mold clamping strip 220, thereby causing the preform in the first cavity 210 to adhere to the preform in the second cavity 310. As the distance between the cutter 400 and the mold clamping strip 220 shortens, the compressing force increases, making the preform in the first cavity 210 and the preform in the second cavity 310 adhere more tightly. When the cutting edge 411 of the cutter 400 slides past the cutting edge 2211, the cutter 400 can cut off the preform waste outside the adhesion point. At this time, the mold clamping strip 220 just enters the mold clamping groove 320, thereby causing the seam line 620 at the adhesion point between a portion of the preform in the first cavity 210 and a portion of the preform in the second cavity 310 to be staggered with its mold clamping line 610, avoiding a reduction in the structural strength of the preform and the finished plastic product due to the overlap of the two lines.

[0062] Furthermore, a scrap cavity 230 is provided on the first mold 200. The scrap cavity 230 is located on the side of the first mold 200 where the first cavity 210 is located. The scrap cavity 230 is an annular cavity parallel to the extending direction of the cavity opening edge of the first cavity 210 and the extending direction of the mold clamping strip 220. The scrap cavity 230 surrounds the outside of the first cavity 210, and the cavity wall of the scrap cavity 230 near the first cavity 210 is the side wall of the mold clamping strip 220 away from the first cavity 210.

[0063] In this embodiment, during the mold closing process of the first mold 200 and the second mold 300, the cutter 400 can cut off the blank waste located on the side of the mold closing strip 220 away from the first cavity 210. The cut-off waste can directly enter the waste cavity 230, so that the plastic products produced in the end do not need to undergo the waste removal process after demolding, thus shortening the production cycle of the plastic products of the present invention.

[0064] In addition, since the cutter 400 is S-shaped, it can act like scissors when cutting off waste material. That is, it first cuts off the waste material from a certain point, and then gradually cuts off the waste material completely, ensuring that the waste material generated when the blank is closed can be completely removed.

[0065] Furthermore, a waste collection box can be provided below the first mold 200 and the second mold 300. The waste material cut off by the cutter 400 can fall directly from the waste cavity 230 into the waste collection box after demolding, which facilitates the collection and recycling of waste.

[0066] In some embodiments, a positioning component is provided between the first mold 200 and the second mold 300 to facilitate mold closing operations. The positioning component includes a pin 510 and a pin hole. The pin 510 is installed on the side of the second mold 300 where the second cavity 310 is opened, and the pin hole is opened on the side of the first mold 200 where the first cavity 210 is opened. The pin 510 is adapted to the pin hole.

[0067] Multiple pins 510 can be provided on the corresponding side of the second mold 300. These pins 510 are all located on the outer side of the second cavity 310 and can be evenly distributed around the edge of the second cavity 310. Similarly, multiple pin holes can be provided. When the first mold 200 and the second mold 300 are closed, the multiple pins 510 are inserted into the multiple pin holes respectively. The arrangement of the pins 510 and pin holes can prevent the first mold 200 and the second mold 300 from failing to close during mold closing, which is beneficial to the normal implementation of the present invention.

[0068] Furthermore, a first air injection port 211 is provided at one end of the first cavity 210, and a second air injection port 311 is provided at one end of the second cavity 310. When the first mold 200 and the second mold 300 are closed, the first air injection port 211 and the second air injection port 311 form an air blowing port. The air blowing pipe 110 of the blow molding host 100 is inserted into the air blowing port to blow mold the material placed between the first cavity 210 and the second cavity 310.

[0069] In this embodiment, both the first cavity 210 and the second cavity 310 are vertically arranged. The first air injection port 211 and the second air injection port 311 are located at the top of the first cavity 210 and the second cavity 310, respectively, and the first air injection port 211 and the second air injection port 311 are complementary. When the first mold 200 and the second mold 300 are closed, the first air injection port 211 and the second air injection port 311 can form a complete air blowing port. The air blowing pipe 110 of the blow molding machine 100 is inserted into the air blowing port to blow mold the preforms in the first cavity 210 and the second cavity 310, thereby enabling this embodiment to produce complete finished plastic products and ensuring the normal implementation of the present invention.

[0070] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully electric hollow blow molding machine, characterized in that, include: Blow molding machine; The first mold and the second mold are both installed on the blow molding machine. The first mold has a first cavity and the second mold has a second cavity. The opening of the first cavity has a mold-closing strip extending along its edge. The opening of the second cavity has a mold-closing groove extending along the edge of the opening of the second cavity. The mold-closing groove communicates with the second cavity. When the first mold and the second mold are closed, the first cavity and the second cavity are interconnected, and the mold closing strip is inserted into the mold closing groove and contacts the bottom of the mold closing groove; The opening edges of the first cavity and the second cavity are both continuous S-shaped lines, and the S-shaped edge of the opening of the first cavity matches the S-shaped edge of the opening of the second cavity. This makes the mold clamping strip provided at the opening of the first cavity an S-shaped extending structural component, and the mold clamping groove opened on the second mold is an S-shaped groove that matches the S-shaped extending mold clamping strip. The end face of the mold clamping strip that extends into the mold clamping groove is a first inclined surface, and the bottom of the mold clamping groove is a second inclined surface that matches the first inclined surface. The side edge of the second inclined surface that is closer to the second cavity is closer to the first mold than the side edge of the second inclined surface that is farther away from the second cavity. The second mold is provided with a cutter, which is located on the side of the second mold where the second cavity is opened. The cutter extends along the edge of the cavity opening of the second cavity and is located on the side of the mold closing groove away from the second cavity. The end face of the cutter away from the second mold is the third inclined surface, the end line of the third inclined surface near the second cavity is the cutting edge, and the end line of the first inclined surface away from the first cavity is the cutting edge. The cutting edge and the cutting edge are adapted to each other. During the process of closing the first and second molds, the cutting edge of the cutter slides past the cutting edge of the mold closing strip, which can squeeze and cut off the waste material generated during mold closing.

2. The all-electric hollow blow molding machine according to claim 1, characterized in that: The cutter is a steel blade.

3. The all-electric hollow blow molding machine according to claim 1, characterized in that: The first mold has a waste cavity, which surrounds the outside of the first cavity, and the side wall of the waste cavity near the first cavity is the side wall of the mold closing strip away from the first cavity.

4. The all-electric hollow blow molding machine according to claim 3, characterized in that: The extension direction of the waste material cavity is parallel to the extension direction of the mold clamping strip.

5. The all-electric hollow blow molding machine according to claim 1, characterized in that: A positioning component is provided between the first mold and the second mold. The positioning component includes a pin and a pin hole. The pin is installed on the side of the second mold where the second cavity is opened, and the pin hole is opened on the side of the first mold where the first cavity is opened. The pin and the pin hole are adapted to each other.

6. The all-electric hollow blow molding machine according to claim 5, characterized in that: The first mold has multiple pins and pin holes. The multiple pins are evenly distributed along the edge of the second cavity, and the multiple pin holes are evenly distributed along the edge of the first cavity. When the first mold and the second mold are closed, the multiple pins are inserted into the corresponding multiple pin holes.

7. The all-electric hollow blow molding machine according to claim 1, characterized in that: The first cavity has a first air injection port at one end, and the second cavity has a second air injection port at one end. When the first mold and the second mold are closed, the first air injection port and the second air injection port form an air blowing port. The air blowing pipe of the blow molding machine is inserted into the air blowing port to blow mold the material placed between the first cavity and the second cavity.

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