Dynamic mold

Abstract

The invention provides a dynamic mold which comprises a bottom plate, a first movable plate and a second movable plate are movably mounted on the bottom plate, a first lower mold is fixedly mounted on the first movable plate, a second lower mold is fixedly mounted on the second movable plate, and the first lower mold is movably connected with the second lower mold through a first elastic part. The first lower die is movably provided with a first upper die through a second elastic piece, and the second lower die is movably provided with a second upper die through a third elastic piece. In the operation process, the dynamic mold is pressed downwards and laterally at the same time, so that the mold is shrunk, after the paper tube is sleeved with the dynamic mold, the pressure applied to the dynamic mold is released, the dynamic mold is made to grow, the paper tube is fixed, displacement of the paper tube during bottom folding is prevented, the folding neatness of the paper bag bottom is improved, and the quality of the paper bag is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of paper bag production, and in particular relates to a dynamic mould. Background Art

[0002] With the tightening of national environmental protection policies and the enhancement of public environmental awareness, environmentally friendly paper bags have gradually replaced traditional plastic bags due to their recyclable and degradable properties and become the new favorite in the market.

[0003] The production technology of environmentally friendly paper bags is also constantly improving, including the selection of environmentally friendly paper raw materials, printing and folding, bag opening and forming, and sealing and closing. These technological advances not only improve production efficiency, but also improve the performance of paper bags, such as load-bearing capacity, waterproof, oil-proof and insulation functions, to meet the packaging needs of different commodities. In addition, the types and performance of environmentally friendly paper bags are also constantly improving, including handbags, food bags, clothing bags, shoe box bags, etc., which play an important role in packaging in shopping malls, supermarkets and advertisements.

[0004] Paper bag production mainly includes paper skin cutting, creases, stringing and gluing. Among them, the gluing process is generally divided into tube gluing and bottom gluing. The tube gluing step is to roll up the sheet of paper skin according to the creases and glue the two sides together to form a cylindrical paper tube. The bottom gluing step is to fold the bottom of the paper tube along the creases and glue them together to form a paper bag.

[0005] After the paper skin is formed into a paper tube, a mold is needed to fix the paper tube during the bottom pasting process. However, the existing mold shape is fixed, and workers are required to put the paper tube on the mold, and then use subsequent equipment to complete the bottom pasting operation. The size of this mold is similar to that of the paper tube, but there is still a certain gap to facilitate the paper bag to be put into the mold. However, due to the existence of the gap, the paper tube is prone to displacement when folding the bottom, resulting in the bottom of the produced paper bag being folded unevenly, affecting the quality of the paper bag. Summary of the invention

[0006] The object of the present invention is to provide a dynamic mold to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dynamic mold, comprising a base plate, on which a first movable plate and a second movable plate are movably installed, the first movable plate is fixedly installed with a first lower mold, the second movable plate is fixedly installed with a second lower mold, the first lower mold is movably connected to the second lower mold through a first elastic member, the first lower mold is movably installed with a first upper mold through a second elastic member, and the second lower mold is movably installed with a second upper mold through a third elastic member.

[0008] Preferably, the first lower mold and the second lower mold are both provided with a first air chamber, a first air plate is fixedly installed on the first air chamber, and the first air chamber is provided with a first air hole.

[0009] Preferably, the first upper mold and the second upper mold are both provided with a second air chamber, a second air plate is fixedly installed on the second air chamber, and the second air chamber is provided with a second air hole.

[0010] Preferably, the first elastic member, the second elastic member and the third elastic member all include a driving bolt and a spring.

[0011] Preferably, the first lower mold is fixedly mounted with a first guide column, and the first guide column is movably connected to the first upper mold via a first linear bearing.

[0012] Preferably, the second lower mold is fixedly mounted with a second guide column, and the second guide column is movably connected to the second upper mold via a second linear bearing.

[0013] Preferably, both the first upper mold and the second upper mold are fixedly mounted with cushion blocks, and the cushion blocks are movably mounted with followers.

[0014] Preferably, the bottom plate is movably connected to the first movable plate and the second movable plate via a slide rail.

[0015] Preferably, limit blocks are fixedly installed at both ends of the slide rail.

[0016] Preferably, the first lower mold, the second lower mold, the first upper mold and the second upper mold are all provided with assembly holes.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The bottom plate of the present invention is movably mounted with a first movable plate and a second movable plate, the first movable plate and the second movable plate are respectively fixedly mounted with a first lower mold and a second lower mold, so that the first lower mold and the second lower mold can move relatively, a first elastic member is connected between the first lower mold and the second lower mold, the first lower mold is movably mounted with a first upper mold through a second elastic member, and the second lower mold is movably mounted with a second upper mold through a third elastic member, during operation, the dynamic mold is simultaneously pressed downward and laterally to shrink the mold, the downward pressing process includes applying downward pressure to the first upper mold and the second upper mold to compress the second elastic member and the third elastic member, at this time, the first upper mold is close to the first lower mold, and the second upper mold is close to the second lower mold, and the side pressing process includes applying pressure to the outer side surfaces of the first upper mold and the second upper mold to make the first upper mold and the second upper mold mutually The first elastic member drives the first lower mold and the second lower mold to open, and the first upper mold and the second lower mold also open accordingly. The second elastic member drives the first upper mold to open, and the third elastic member drives the second upper mold to open, so that the dynamic mold grows and fixes the paper tube to prevent the paper tube from shifting when the bottom is folded, thereby improving the folding neatness of the bottom of the paper bag and the quality of the paper bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the first perspective structural view of the present invention.

[0020] Figure 2 This is the second perspective structural view of the present invention.

[0021] Figure 3 It is an exploded structural view of the present invention.

[0022] Figure 4 This is the first cross-sectional structural view of the present invention.

[0023] Figure 5 It is a second cross-sectional structural view of the present invention.

[0024] Figure 6 It is a cross-sectional structural view of the first lower mold and the second lower mold of the present invention.

[0025] Figure 7 It is a structural view of the first lower mold and the second lower mold of the present invention.

[0026] Figure 8It is a structural view of the first upper mold and the second upper mold of the present invention.

[0027] Fig. 9 It is a structural view of the first elastic member, the second elastic member and the third elastic member of the present invention.

[0028] Markings in the figure: base plate 1, first movable plate 2, second movable plate 3, first lower mold 4, second lower mold 5, first elastic member 6, second elastic member 7, first upper mold 8, third elastic member 9, second upper mold 10, first air chamber 11, first wind plate 12, first air hole 13, second air chamber 14, second wind plate 15, second air hole 16, plug bolt 17, spring 18, first guide column 19, first linear bearing 20, second guide column 21, second linear bearing 22, cushion block 23, follower 24, slide rail 25, limit block 26, assembly hole 27. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] like Figure 1-Figure 9As shown, a dynamic mold provided by the present invention includes a bottom plate 1, a first movable plate 2 and a second movable plate 3 are movably mounted on the bottom plate 1, a first lower mold 4 is fixedly mounted on the first movable plate 2, a second lower mold 5 is fixedly mounted on the second movable plate 3, the first lower mold 4 is movably connected to the second lower mold 5 through a first elastic member 6, the first lower mold 4 is movably mounted with a first upper mold 8 through a second elastic member 7, and the second lower mold 5 is movably mounted with a second upper mold 10 through a third elastic member 9. The first lower mold 4 and the second lower mold 5 are both provided with a first air chamber 11, the first air chamber 11 is fixedly mounted with a first wind plate 12, and the first air chamber 11 is provided with a first air hole 13. The first upper mold 8 and the second upper mold 10 are both provided with a second air chamber 14, the second air chamber 14 is fixedly mounted with a second wind plate 15, and the second air chamber 14 is provided with a second air hole 16. The first elastic member 6, the second elastic member 7 and the third elastic member 9 all include a plugging bolt 17 and a spring 18. The first lower mold 4 is fixedly mounted with a first guide post 19, and the first guide post 19 is movably connected to the first upper mold 8 through a first linear bearing 20. The second lower mold 5 is fixedly mounted with a second guide post 21, and the second guide post 21 is movably connected to the second upper mold 10 through a second linear bearing 22. The first upper mold 8 and the second upper mold 10 are both fixedly mounted with a cushion block 23, and the cushion block 23 is movably mounted with a follower 24. The bottom plate 1 is movably connected to the first movable plate 2 and the second movable plate 3 through a slide rail 25. Limiting blocks 26 are fixedly mounted at both ends of the slide rail 25. The first lower mold 4, the second lower mold 5, the first upper mold 8 and the second upper mold 10 are all provided with assembly holes 27.

[0032] Through the above technical scheme, the bottom plate 1 of the present invention is movably installed with the first movable plate 2 and the second movable plate 3, the first movable plate 2 and the second movable plate 3 are respectively fixedly installed with the first lower mold 4 and the second lower mold 5, so that the first lower mold 4 and the second lower mold 5 can move relatively, and a first elastic member 6 is connected between the first lower mold 4 and the second lower mold 5, the first lower mold 4 is movably installed with the first upper mold 8 through the second elastic member 7, and the second lower mold 5 is movably installed with the second upper mold 10 through the third elastic member 9. During operation, the dynamic mold is pressed downward and laterally at the same time to shrink the mold. The downward pressing process includes applying downward pressure to the first upper mold 8 and the second upper mold 10 to compress the second elastic member 7 and the third elastic member 9. At this time, the first upper mold 8 is close to the first lower mold 4, and the second upper mold 10 is close to the second lower mold 5. The side pressing process includes applying pressure to the outer side surfaces of the first upper mold 8 and the second upper mold 10 to make the first upper mold 8 and The second upper mold 10 approaches each other, and drives the first lower mold 4 and the second lower mold 5 to approach each other, so that the first elastic member 6 is compressed. At this time, the first upper mold 8 and the first lower mold 4 approach each other, the second upper mold 10 and the second lower mold 5 approach each other, the first upper mold 8 and the second upper mold 10 approach each other, and the first lower mold 4 and the second lower mold 5 approach each other. The four molds are close to each other, so that the dynamic mold is reduced, which is convenient for the manipulator to insert the paper tube into the dynamic mold. After the paper tube is inserted into the dynamic mold, the pressure applied to the dynamic mold is released. At this time, the first elastic member 6 drives the first lower mold 4 and the second lower mold 5 to open, and the first upper mold 8 and the second upper mold 10 also open accordingly. The second elastic member 7 drives the first upper mold 8 to open, and the third elastic member 9 drives the second upper mold 10 to open, so that the dynamic mold grows, and fixes the paper tube to prevent the paper tube from shifting when folding the bottom, thereby improving the folding neatness of the bottom of the paper bag and improving the quality of the paper bag.

[0033] Embodiment 2:

[0034] like Figure 1-Figure 9As shown, in view of the problem that the paper tube is easily displaced during the bottom pasting operation in the production process of environmentally friendly paper bags, the present invention proposes a design of a dynamic mold. Through the cooperation of the movable plate and the elastic member, the overall size of the mold is dynamically adjusted to facilitate the insertion and fixation of the paper tube, and to prevent displacement during the bottom pasting process, thereby improving the neatness of the folding of the bottom of the paper bag and the overall quality of the paper bag. The present invention mainly comprises a bottom plate 1, a first movable plate 2, a second movable plate 3, a first lower mold 4, a second lower mold 5, a first upper mold 8 and a second upper mold 10. The bottom plate 1 serves as the basis of the entire mold, and the first movable plate 2 and the second movable plate 3 are movably installed on it. The first movable plate 2 and the second movable plate 3 are respectively fixedly installed with the first lower mold 4 and the second lower mold 5. Such a design allows the first lower mold 4 and the second lower mold 5 to be relatively movable to adapt to the insertion and fixation of the paper tube. The first lower mold 4 and the second lower mold 5 are movably connected by the first elastic member 6, so that the first lower mold 4 and the second lower mold 5 can be compressed to be close to each other and automatically open. The first lower mold 4 is movably mounted with the first upper mold 8 via the second elastic member 7, and the second lower mold 5 is movably mounted with the second upper mold 10 via the third elastic member 9. This design allows the upper mold and the lower mold to be relatively elastically movable, so that the dynamic mold can be shrunk and expanded.

[0035] During the operation, the dynamic mold is pressed downward and laterally at the same time, and the upper and lower molds are brought closer to each other, so that the dynamic mold is reduced as a whole, which is convenient for the paper tube to be inserted into the dynamic mold. The pressing process includes applying downward pressure to the first upper mold 8 and the second upper mold 10 to compress the second elastic member 7 and the third elastic member 9. This process requires the use of an external driving mechanism, such as a cylinder, a servo motor, etc. The driving mechanism directly acts on the first upper mold 8 and the second upper mold 10 to press the first upper mold 8 and the second upper mold 10 downward. This process compresses the longitudinal direction of the dynamic mold, that is, the first upper mold 8 is close to the first lower mold 4, and the second upper mold 10 is close to the second lower mold 5. The side pressure process includes applying pressure to the outer side of the first upper mold 8 and the second upper mold 10, so that the first upper mold 8 and the second upper mold 10 are close to each other, and at the same time, the first lower mold 4 and the second lower mold 5 are driven to be close to each other, so that the first elastic member 6 is compressed. This process also needs to be implemented using an external driving mechanism, such as a cylinder, a servo motor, etc. The driving mechanism directly acts on both sides of the first upper mold 8 and the second upper mold 10, so that the first upper mold 8 and the second upper mold 10 are close to each other. This process compresses the dynamic mold in the lateral direction and makes it smaller. In this way, the four molds (the first upper mold 8, the second upper mold 10, the first lower mold 4 and the second lower mold 5) are close to each other, so that the dynamic mold is reduced as a whole, which is convenient for the manipulator to put the paper tube into the dynamic mold and improve work efficiency.

[0036] After the paper tube is inserted into the dynamic mold, the pressure applied to the dynamic mold is released, that is, the external driving mechanism stops applying pressure to the first upper mold 8 and the second upper mold 10. At this time, the compressed elastic force of the first elastic member 6 is released, and the first elastic member 6 drives the first lower mold 4 and the second lower mold 5 to open, and at the same time drives the first upper mold 8 and the second upper mold 10 to open. In this process, the dynamic mold opens in the transverse direction. And the compressed elastic force of the second elastic member 7 and the third elastic member 9 is released, the second elastic member 7 drives the first upper mold 8 to open, and the third elastic member 9 drives the second upper mold 10 to open. In this process, the dynamic mold opens in the longitudinal direction, so that the dynamic mold returns to its original state, and the paper tube is fixed on the dynamic mold to prevent the paper tube from shifting when the bottom is folded. This design improves the neatness of the bottom folding of the paper bag and improves the quality of the paper bag.

[0037] In actual production, the use of dynamic molds can be combined with automated production lines to achieve automatic insertion and fixation of paper tubes. By programming and controlling the movements of the manipulator, the paper tube can be quickly and accurately inserted into the dynamic mold, improving production efficiency. At the same time, the design of the dynamic mold can also be adjusted according to production needs to adapt to paper tubes of different shapes and sizes, increasing production flexibility.

[0038] The first elastic member 6, the second elastic member 7 and the third elastic member 9 of the present invention are all composed of a driving bolt 17 and a spring 18. The driving bolt 17 is used to flexibly assemble the upper and lower molds together, and the spring 18 is responsible for providing elastic force to ensure that the dynamic mold is opened.

[0039] Embodiment three:

[0040] like Figure 1-Figure 9As shown, in order to further improve the quality of paper tube bottom pasting, the first lower mold 4 and the second lower mold 5 of the present invention are both provided with a first air chamber 11, and the arrangement of these air chambers is to provide auxiliary fixing in the bottom pasting operation. A first air plate 12 is fixedly installed in the first air chamber 11, and a plurality of air holes are designed on these air plates, and the air holes are evenly distributed to ensure that the negative pressure can be evenly distributed. The first air chamber 11 is provided with first air holes 13, which are channels connecting the air chamber and the negative pressure source, and negative pressure can be input into the air chamber through these air holes. Similarly, the first upper mold 8 and the second upper mold 10 are both provided with a second air chamber 14, and the functions of these air chambers are similar to those of the air chambers of the lower mold, and they are also to provide auxiliary fixing in the bottom pasting operation. A second air plate 15 is fixedly installed in the second air chamber 14, and a plurality of air holes are also designed on these air plates to ensure that the negative pressure can be evenly distributed. The second air chamber 14 is provided with second air holes 16, which are also channels connecting the air chamber and the negative pressure source, and negative pressure can be input into the air chamber through these air holes. During the bottom pasting operation, the folded part at the bottom of the paper tube will contact the wind plate. Negative pressure is provided to the air chamber through the air holes, and negative pressure adsorption is formed between the wind plate and the bottom of the paper tube. This adsorption force can fix the folded part at the bottom of the paper tube on the wind plate. Since the wind plate is designed with multiple air holes, the bottom of the paper tube will not be deformed due to negative pressure, thereby ensuring the flatness and neatness of the bottom of the paper bag. The adsorption effect of negative pressure prevents the bottom of the paper tube from being displaced due to external force during the bonding process, thereby ensuring the accuracy of bonding and the quality of the paper bag. This design not only improves production efficiency through negative pressure adsorption, but also reduces damage to the paper tube and reduces production costs. At the same time, the negative pressure adsorption method is more flexible, and the strength of the negative pressure can be adjusted according to the actual situation of the paper tube to adapt to paper tubes of different materials and thicknesses, thereby improving the applicability and flexibility of the mold. The design of the air chamber and the wind plate of the present invention improves the neatness of the folding of the bottom of the paper bag through negative pressure adsorption, prevents displacement during the bonding process, and thus improves the quality of the paper bag.

[0041] Embodiment 4:

[0042] like Figure 1-Figure 9As shown, the first lower mold 4 of the present invention is fixedly installed with a first guide column 19, and the first guide column 19 is movably connected to the first upper mold 8 through a first linear bearing 20. This connection mode allows the first upper mold 8 to move precisely in the vertical direction while maintaining a stable connection with the first lower mold 4, thereby improving the lateral force performance of the mold. The design of the linear bearing reduces friction and ensures smooth movement of the mold during operation. Similarly, the second lower mold 5 is fixedly installed with a second guide column 21, and the second guide column 21 is movably connected to the second upper mold 10 through a second linear bearing 22. This design not only provides precise movement in the vertical direction, but also ensures a stable connection between the second upper mold 10 and the second lower mold 5, thereby improving the lateral force performance of the mold. The use of linear bearings also reduces friction and improves the operating efficiency of the mold. In the process of dynamic mold compression becoming smaller, the lateral pressure operation requires the upper mold to drive the corresponding lower mold to move. Since the first elastic member 6 is provided between the lower molds, the connection between the upper mold and the lower mold will be subjected to a large lateral force. This lateral force may cause deformation of the connection, affecting the stability and service life of the mold. The use of guide pins and linear bearings can improve the firmness of the connection between the upper and lower molds, prevent the dynamic mold from deforming when subjected to lateral forces, and thus improve the durability and reliability of the mold. The use of guide pins and linear bearings not only improves the lateral force performance of the mold, but also ensures the stability of the mold under high pressure and frequent operation. By reducing friction and improving the stability of the connection, the service life of the mold is extended. The precise combination of guide pins and linear bearings allows the mold to withstand greater forces during operation without displacement or damage.

[0043] Embodiment five:

[0044] like Figure 1-Figure 9As shown, the first upper mold 8 and the second upper mold 10 are both fixedly installed with pads 23. The function of these pads 23 is to disperse the pressure of the follower 24 on the upper mold when the dynamic mold is compressed and reduced, so as to ensure the stability of the upper mold during the compression process. The pad 23 is movably installed with the follower 24, which is a key component connecting the drive mechanism and the mold. When the dynamic mold needs to be compressed and reduced, the drive mechanism presses the follower 24 down through the inclined block structure, and the inclined surface of the inclined block acts on the follower 24. The surface of the follower 24 is designed to be cylindrical. Such a design makes the follower 24 subject to forces in two directions, namely, downward pressure and lateral pressure, when the inclined block is pressed down. This design ensures that the dynamic mold can be evenly compressed in the longitudinal and transverse directions, thereby realizing the reduction and enlargement of the size of the dynamic mold. In the process of mold compression, the role of the pad 23 is particularly important. The pad 23 not only disperses the pressure of the follower 24 on the upper mold, but also provides a stable support platform, so that the upper mold can move smoothly during the compression process. The cooperation between the cylindrical surface of the follower 24 and the inclined surface of the inclined block ensures the smooth transmission of force during the pressing process, while also reducing friction and wear, and extending the service life of the mold. The design of the pad 23 and the follower 24, combined with the pressing action of the inclined block structure, enables the dynamic mold to be evenly compressed in the longitudinal and transverse directions, improving the operating efficiency and stability of the mold. The ability of the pad 23 to disperse pressure and the precise cooperation of the follower 24 and the inclined block structure ensure the stability and durability of the mold during the compression process.

[0045] Embodiment six:

[0046] like Figure 1-Figure 9 As shown, the base plate 1 of the present invention is movably connected with the first movable plate 2 and the second movable plate 3 through a slide rail 25. The design of the slide rail 25 allows the first movable plate 2 and the second movable plate 3 to slide freely on the base plate 1, thereby realizing dynamic adjustment of the mold. The structure of the slide rail 25 is composed of a guide rail and a slider, and the design of this structure is intended to reduce friction and improve the movement efficiency and accuracy of the movable plate. During the operation of the dynamic mold, the first movable plate 2 and the second movable plate 3 need to frequently perform opening and closing actions to achieve the reduction and opening of the dynamic mold. The design of the slide rail 25 makes this opening and closing action smoother and reduces production delays caused by friction or jamming. The precise control of the slide rail 25 also ensures the precise position of the movable plate during the opening and closing process, which is crucial to ensuring the consistency of the bottom pasting operation of the paper bag and the quality of the paper bag. Limit blocks 26 are fixedly installed at both ends of the slide rail 25 to prevent the first movable plate 2 and the second movable plate 3 from detaching from the slide rail 25.

[0047] The first lower mold 4, the second lower mold 5, the first upper mold 8 and the second upper mold 10 of the present invention are all provided with assembly holes 27, which are designed to facilitate the rapid installation and connection of the air pipe and the air hole. The position of the assembly hole 27 is close to the air chamber, and such a layout is conducive to shortening the length of the air pipe.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0049] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A dynamic mold, comprising a bottom plate, characterized in that: The bottom plate is movably mounted with a first movable plate and a second movable plate, the first movable plate is fixedly mounted with a first lower mold, the second movable plate is fixedly mounted with a second lower mold, the first lower mold is movably connected to the second lower mold via a first elastic member, the first lower mold is movably mounted with a first upper mold via a second elastic member, and the second lower mold is movably mounted with a second upper mold via a third elastic member.

2. A dynamic mold according to claim 1, characterized in that: The first lower mold and the second lower mold are both provided with a first air chamber, a first air plate is fixedly installed on the first air chamber, and the first air chamber is provided with a first air hole.

3. A dynamic mold according to claim 1, characterized in that: The first upper mold and the second upper mold are both provided with a second air chamber, a second air plate is fixedly installed on the second air chamber, and the second air chamber is provided with a second air hole.

4. A dynamic mold according to claim 1, characterized in that: The first elastic member, the second elastic member and the third elastic member all include a driving bolt and a spring.

5. A dynamic mold according to claim 1, characterized in that: The first lower mold is fixedly mounted with a first guide column, and the first guide column is movably connected to the first upper mold via a first linear bearing.

6. A dynamic mold according to claim 1, characterized in that: The second lower mold is fixedly mounted with a second guide column, and the second guide column is movably connected to the second upper mold via a second linear bearing.

7. A dynamic mold according to claim 1, characterized in that: The first upper mold and the second upper mold are both fixedly mounted with cushion blocks, and the cushion blocks are movably mounted with followers.

8. A dynamic mold according to claim 1, characterized in that: The bottom plate is movably connected to the first movable plate and the second movable plate through a slide rail.

9. A dynamic mold according to claim 8, characterized in that: Limit blocks are fixedly installed at both ends of the slide rail.

10. A dynamic mold according to claim 1, characterized in that: The first lower mold, the second lower mold, the first upper mold and the second upper mold are all provided with assembly holes.

Images