Integrated mold cylinder structure

Abstract

The utility model discloses an integrated die cylinder structure which comprises an integrated die cylinder sleeve and a die cylinder mandrel, the die cylinder mandrel is arranged in the integrated die cylinder sleeve in a sliding mode, and a composite sliding sealing structure is arranged at the sliding fit position of the die cylinder mandrel and the integrated die cylinder sleeve. According to the integrated mold cylinder structure, the integrated mold cylinder sleeve and the composite sliding sealing structure are adopted, the consistency of the material of the integrated mold cylinder sleeve is guaranteed, the problems that deformation and faults occur and the sealing performance is affected due to mismatching of thermal expansion of multiple components are solved, and multiple seals are used in cooperation through the composite sliding sealing structure; and the sealing performance in the high-pressure mold locking and opening process of the mold cylinder can be effectively guaranteed, the sealing performance is good, and the service life is long. And due to few parts, the structure is simple, the manufacture is more convenient, the assembly is faster, the production efficiency is effectively improved, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine technical field especially relates to an integral type mould cylinder structure. BACKGROUND

[0002] The sealing type of the mould cylinder assembly used by the existing vertical injection molding machine is that the lower cover of the mould cylinder seals the mould cylinder sleeve, but this sealing by the lower cover of the mould cylinder needs to manufacture the mould cylinder sleeve and the lower cover of the mould cylinder respectively, and then fasten and seal in a split type by the connecting piece, the deformation and failure caused by the slight difference of material composition between the lower cover of the mould cylinder and the mould cylinder sleeve cause the mismatch of thermal expansion, which leads to the decrease of stability and reliability of the equipment and reduces the service life of the mould cylinder.

[0003] Moreover, the sealing performance between the lower cover of the mould cylinder and the mould cylinder sleeve is extremely high during use, and if there is poor sealing, it will cause leakage, which will affect the use performance of the mould cylinder. Moreover, with the increase of use time, the sealing performance between the lower cover of the mould cylinder and the mould cylinder body will decrease, the risk of leakage will increase, which seriously affects the normal work and service life of the mould cylinder, and the sealing element needs to be frequently replaced, which affects the production efficiency and increases the production and maintenance cost.

[0004] In order to solve the above problems, the existing mould cylinder assembly needs to be newly designed, and a mould cylinder structure is developed, which has good sealing performance, does not leak, does not need to frequently replace the sealing element for maintenance, the sealing effect of the mould cylinder assembly is good, the service life is long, and the production efficiency and production cost can be greatly improved. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at solving the problems that the existing mould cylinder uses the lower cover of the mould cylinder for sealing, the deformation and failure caused by the thermal expansion of the material, the leakage, the influence on the sealing performance of the mould cylinder, the influence on the use performance and normal work of the mould cylinder, the low production efficiency caused by frequent maintenance, and the production cost, and provides an integral type mould cylinder structure, which does not set the lower cover of the mould cylinder, uses the integral type mould cylinder sleeve cooperated with the composite sliding sealing structure, effectively solves the problem of the decrease of sealing performance caused by leakage, does not need to frequently replace the sealing element for maintenance, the sealing effect of the mould cylinder assembly is good, the service life is long, the production efficiency and production cost can be greatly improved.

[0006] The utility model discloses a technical scheme that realizes the purpose of the utility model is as follows: a one-piece mould cavity structure, including one-piece mould cavity sleeve and mould cavity core shaft, mould cavity core shaft slidingly arranged in one-piece mould cavity sleeve, mould cavity core shaft and one-piece mould cavity sleeve sliding fit are provided with composite sliding seal structure. The one-piece mould cavity structure, through the improvement design of the existing mould cavity, no longer uses the mould cavity lower cover, sets up the one-piece structure to the mould cavity sleeve, and is provided with the composite sliding seal structure at the sliding fit of the mould cavity core shaft and the one-piece mould cavity sleeve, namely guarantees the consistency of one-piece mould cavity sleeve material, does not appear the deformation and the failure due to the mismatch of multiple components thermal expansion, influences the problem of sealing performance, realizes the use of multiple sealing through the composite sliding seal structure, can form the sealing composite surface between one-piece mould cavity sleeve and mould cavity core shaft when using, guarantees that the oil liquid does not appear leakage, can effectively guarantee the sealing performance in the process of mould cavity high pressure locking and opening, and the sealing performance is good, and the service life is long. Moreover, owing to few parts, simple structure, making is more convenient, assembly is more fast, effectively improves production efficiency and reduces production cost.

[0007] As preferred, the composite sliding seal structure includes multiple sealing grooves arranged on the inner wall of the one-piece mould cavity sleeve and multiple sealing elements arranged in the sealing grooves; or the composite sliding seal structure includes multiple sealing grooves arranged on the outer wall of the mould cavity core shaft and multiple sealing elements arranged in the sealing grooves. The composite sliding seal structure can be arranged on the inner wall of the one-piece mould cavity sleeve or the outer wall of the mould cavity core shaft, and can be arranged according to actual needs. The composite sliding seal structure preferably has multiple sealing grooves, and different sealing elements are arranged in each sealing groove. Through the mutual cooperation of various sealing elements, good sealing performance is achieved, and leakage is avoided during the operation of the mould cavity.

[0008] As preferred, the sealing grooves include dynamic sealing grooves, wear-resistant ring grooves, U-shaped sealing grooves and dust sealing grooves. The preferred sealing grooves have four grooves, which are dynamic sealing grooves, wear-resistant ring grooves, U-shaped sealing grooves and dust sealing grooves. Of course, more sealing grooves can be arranged according to sealing needs.

[0009] As preferred, the sealing elements include pull rod seals arranged in the dynamic sealing grooves, wear-resistant rings arranged in the wear-resistant ring grooves, U-shaped sealing elements arranged in the U-shaped sealing grooves and dustproof sealing elements arranged in the dust sealing grooves. Different sealing elements are arranged in different sealing grooves to form a composite sliding seal structure, which cooperates with each other to achieve good sealing effect during the operation of the mould cavity, and has good sealing performance and long service life.

[0010] As preferred, the integrated mold cylinder sleeve comprises an integrated mold cylinder sleeve base, a mold cylinder sleeve body and a mold cylinder sleeve diameter, the integrated mold cylinder sleeve is internally provided with a mold cylinder inner cavity, the mold cylinder sleeve diameter is internally provided with a matching sliding cavity, and the matching sliding cavity and the mold cylinder inner cavity are arranged in a variable-diameter structure. The integrated mold cylinder sleeve is integrally manufactured, the mold cylinder sleeve base is arranged to facilitate the fixed connection with the lower mold plate of the vertical injection molding machine. The mold cylinder sleeve body is arranged to facilitate the arrangement of the internal mold cylinder inner cavity, thereby ensuring the internal hydraulic pushing force of the mold cylinder mandrel during the high-pressure clamping and mold opening processes, and realizing rapid clamping and mold opening.

[0011] As preferred, the composite sliding sealing structure is arranged on the inner wall of the matching sliding cavity. As a preferred solution, the composite sliding sealing structure can be arranged on the inner wall of the matching sliding cavity.

[0012] As preferred, the cavity diameter of the matching sliding cavity is smaller than the cavity diameter of the mold cylinder inner cavity. The cavity diameter of the matching sliding cavity being smaller than the cavity diameter of the mold cylinder inner cavity is beneficial to realize the composite sliding sealing and to ensure the working pressure inside the mold cylinder inner cavity, so that the mold cylinder mandrel can effectively perform clamping and mold opening operations.

[0013] As preferred, the mold cylinder sleeve body and the mold cylinder sleeve diameter are arranged in an integrated straight cylinder structure or an integrated stepped structure. The mold cylinder sleeve body and the mold cylinder sleeve diameter can be arranged in an integrated straight cylinder structure or an integrated stepped structure, which can be selected according to actual needs.

[0014] As preferred, the mold cylinder mandrel comprises an integrated mandrel body and a mandrel connecting portion, and the mold cylinder mandrel is internally provided with a mandrel inner cavity. The mold cylinder mandrel is provided with the mandrel body to realize cooperation with the mold cylinder inner cavity and the matching sliding cavity, the mandrel connecting portion is arranged to facilitate the connection and fixation between the mold cylinder mandrel and the lower mold plate of the vertical injection molding machine, and the mandrel inner cavity is arranged inside the mold cylinder mandrel to reduce the weight while ensuring the performance of the mold cylinder mandrel.

[0015] As preferred, the composite sliding sealing structure is arranged on the mandrel body and on the stroke segment of the integrated mold cylinder sleeve in the working state of the mold cylinder mandrel. As another preferred solution, the composite sliding sealing structure can be arranged on the mandrel body, and the specific position is the stroke segment of the integrated mold cylinder sleeve during the entire working stroke of the mold cylinder mandrel in the working process, which can also realize composite sealing.

[0016] The utility model discloses a beneficial effect is: this integrated moulding cavity structure adopts integrated moulding cavity sleeve and composite sliding seal structure, namely guarantee integrated moulding cavity sleeve material consistency, does not appear deformation and failure due to multiple components thermal expansion mismatch, influence sealing performance problem, realizes multiple sealing cooperation use through composite sliding seal structure, guarantees that oil liquid does not appear leakage, can effectively guarantee moulding cavity high pressure locking mould, sealing performance in the mould opening process, and sealing performance is good, and service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the utility model integrated moulding cavity structure.

[0018] Fig. 2 is a structure schematic view of another angle of the utility model integrated moulding cavity structure.

[0019] Fig. 3 is a kind of axial view of the utility model integrated moulding cavity structure.

[0020] Fig. 4 is Figure 3 A-A sectional view in it.

[0021] Figure 5 It is Figure 3 B-B sectional view in it.

[0022] Figure 6 It is Figure 3 C-C sectional view in it.

[0023] Figure 7 It is a kind of application structure schematic view of the utility model integrated moulding cavity structure.

[0024] Figure 8 It is a structure schematic view of integrated moulding cavity structure in example 2.

[0025] Figure 9 It is a structure schematic view of moulding cavity mandrel in example 2.

[0026] In the drawing: 1, integrated moulding cavity sleeve, 10, moulding cavity inner chamber, 11, moulding cavity cylinder base, 12, moulding cavity cylinder body, 13, moulding cavity cylinder diameter, 14, center positioning protrusion, 15, seat rib, 16, fixed boss, 17, fixed hole, 18, moulding cavity cylinder body flange, 19, fit sliding cavity;

[0027] 2, moulding cavity mandrel, 21, mandrel main body, 22, mandrel connecting portion, 23, mandrel inner chamber;

[0028] 3, first oil hole, 4, first oil joint, 5, oil valve cavity, 6, disc type oil valve, 7, oil valve flange, 8, second oil hole, 9, second oil joint;

[0029] 30, dynamic sealing groove, 31, pull rod seal, 40, wear ring groove, 41, wear ring, 50, U-shaped sealing groove, 51, U-shaped sealing element, 60, dust sealing groove, 61, dust sealing element,

[0030] 100, undercylinder plate, 200, lower die plate. DETAILED DESCRIPTION

[0031] The technical scheme of the utility model will be further explained in detail below by means of specific embodiments and in conjunction with the drawings.

[0032] Embodiment 1:

[0033] In Figure 1 、 Figure 2 、 Figure 3 In the embodiment shown in the figure, an integrated mold cylinder structure comprises an integrated mold cylinder sleeve 1 and a mold cylinder core shaft 2, the mold cylinder core shaft 2 is slidingly arranged inside the integrated mold cylinder sleeve 1, and the mold cylinder core shaft 2 is provided with a composite sliding sealing structure at the sliding fit position with the integrated mold cylinder sleeve 1.

[0034] The composite sliding sealing structure comprises a plurality of sealing grooves arranged on the inner wall of the integrated mold cylinder sleeve and a plurality of sealing elements arranged inside the sealing grooves.

[0035] The sealing grooves comprise a dynamic sealing groove 30, a wear ring groove 40, a U-shaped sealing groove 50 and a dust sealing groove 60.

[0036] The sealing elements comprise a pull rod seal 31 arranged inside the dynamic sealing groove 30, a wear ring 41 arranged inside the wear ring groove 40, a U-shaped sealing element 51 arranged inside the U-shaped sealing groove 50 and a dust sealing element 61 arranged inside the dust sealing groove 60.

[0037] In this embodiment, an integrated mold cylinder structure comprises an integrated mold cylinder sleeve 1 and a mold cylinder core shaft 2, the mold cylinder core shaft 2 is slidingly sealed inside the integrated mold cylinder sleeve 1, the mold cylinder core shaft 2 moves up and down along the integrated mold cylinder sleeve 1 to realize the opening and closing actions.

[0038] The integrated mold cylinder sleeve 1 is in the form of a cylindrical structure as a whole, the integrated mold cylinder sleeve 1 is internally provided with a mold cylinder inner cavity 10, and the integrated mold cylinder sleeve 1 comprises an integrally arranged mold cylinder cylinder base 11, a mold cylinder cylinder body 12 and a mold cylinder cylinder diameter 13.

[0039] The mold cylinder cylinder diameter 13 is internally provided with a matching sliding cavity 19, and the matching sliding cavity 19 and the mold cylinder inner cavity 13 are arranged in a variable-diameter structure.

[0040] The composite sliding sealing structure is arranged on the inner wall of the matching sliding cavity 19. The cavity diameter of the matching sliding cavity 19 is smaller than the cavity diameter of the mold cylinder inner cavity 10. The outer periphery of the mold cylinder body 12 and the outer periphery of the mold cylinder diameter 13 are arranged in an integral stepped structure.

[0041] The bottom of the mold cylinder base 11 is provided with a center positioning protrusion 14 and four seat ribs 15 arranged in a cross-shaped structure around the center positioning protrusion 14. A plurality of fixed bosses 16 are arranged on the outer periphery of the mold cylinder base 11 corresponding to the four seat ribs 15, and the fixed bosses 16 are provided with fixing holes 17. The fixed bosses 16 and the fixing holes 17 are fixedly connected with the lower mold plate 200 in the vertical injection molding machine mold plate assembly.

[0042] As shown in Figure 5 The mold cylinder body 12 is provided with a first oil injection hole 3 in the radial direction, and the first oil injection hole 3 is connected with a first oil injection joint 4.

[0043] The mold cylinder body 12 is provided with an oil valve cavity 5 in the radial direction, and the oil valve cavity 5 penetrates the mold cylinder inner cavity 10 of the mold cylinder body 12. The outer side of the oil valve cavity 5 is provided with a mold cylinder body flange 18.

[0044] The mold cylinder body flange 18 is connected with a disc type full oil valve 6, and the disc type full oil valve 6 is connected with a full oil valve flange 7.

[0045] As shown in Figure 6 A second oil injection hole 8 is arranged on the disc type full oil valve 6, and the second oil injection hole 8 is connected with a second oil injection joint 9.

[0046] The cavity diameter of the mold cylinder inner cavity 10 is larger than the inner diameter of the mold cylinder diameter 13, and the mold cylinder diameter 13 cooperates with the outer diameter of the mold cylinder core shaft 2 to form a dynamic seal.

[0047] As shown in Figure 4 A plurality of sealing groove structures are arranged on the inner wall of the mold cylinder diameter 13, and sealing elements are arranged inside the sealing groove structures. The sealing groove structures include a dynamic sealing groove 30, a wear-resistant ring groove 40, a U-shaped sealing groove 50, and a dust sealing groove 60. The dynamic sealing groove 30 is provided with a pull rod seal 31 inside, the wear-resistant ring groove 40 is provided with a wear-resistant ring 41 inside, the U-shaped sealing groove 50 is provided with a U-shaped sealing element 51 inside, and the dust sealing groove 60 is provided with a dustproof sealing element 61 inside.

[0048] The stepped structure is arranged between the mold cylinder diameter 13 and the mold cylinder body 12, and the stepped structure is also arranged between the inner diameter of the mold cylinder diameter 13 and the mold cylinder cavity 10, so as to ensure the mold closing and opening force and facilitate the realization of the integrated sealing structure.

[0049] The mold cylinder core shaft 2 comprises an integrated core shaft body 21 and a core shaft connecting part 22. The core shaft connecting part 22 is arranged outside the integrated mold cylinder sleeve 1 and is used to realize the fixed connection with the lower mold plate 100. The core shaft body 21 is internally provided with a core shaft cavity 23, which can reduce the weight of the core shaft body, reduce the mold opening and closing force, and save costs. The core shaft body 21 has a straight cylinder structure.

[0050] As shown in Figure 7 , in application, the cylinder bottom 11 of the integrated mold cylinder 1 is connected with the lower plate surface of the lower mold plate 200, the core shaft connecting part 22 on the mold cylinder core shaft 2 is connected with the lower mold plate 100 through a connecting piece, and then oil is injected through the first oil injection joint 4 and / or the second oil injection joint 9 to realize mold closing under high pressure. The oil in the mold cylinder cavity 10 is pumped out through the first oil injection joint 4 and / or the second oil injection joint 9 to realize mold opening.

[0051] Embodiment 2:

[0052] In Figure 8 , Figure 9 , an integrated mold cylinder structure comprises an integrated mold cylinder sleeve 1 and a mold cylinder core shaft 2. The mold cylinder core shaft 2 is slidingly arranged inside the integrated mold cylinder sleeve 1. The mold cylinder core shaft 2 is provided with a composite sliding sealing structure at the sliding fit position with the integrated mold cylinder sleeve 1.

[0053] The composite sliding sealing structure comprises a plurality of sealing grooves arranged on the outer wall of the mold cylinder core shaft and a plurality of sealing elements arranged in the sealing grooves.

[0054] The sealing grooves comprise a dynamic sealing groove 30, a wear-resistant ring groove 40, a U-shaped sealing groove 50, and a dust sealing groove 60.

[0055] The sealing elements comprise a pull rod seal 31 arranged in the dynamic sealing groove 30, a wear-resistant ring 41 arranged in the wear-resistant ring groove 40, a U-shaped sealing element 51 arranged in the U-shaped sealing groove 50, and a dustproof sealing element 61 arranged in the dust sealing groove 60.

[0056] The composite sliding sealing structure is arranged on the core shaft body 21 and is located on the stroke segment of the sliding fit of the integrated mold cylinder sleeve 1 in the working state of the mold cylinder core shaft 2.

[0057] In this embodiment, an integrated mold cylinder structure includes an integrated mold cylinder sleeve 1 and a mold cylinder mandrel 2. The mold cylinder mandrel 2 is slidingly sealed inside the integrated mold cylinder sleeve 1, and the mold cylinder mandrel 2 moves up and down along the integrated mold cylinder sleeve 1 to realize the mold opening and closing action.

[0058] The integrated mold cylinder sleeve 1 is in a cylindrical structure, and the mold cylinder inner cavity 10 is arranged inside the integrated mold cylinder sleeve 1. The integrated mold cylinder sleeve 1 includes an integrated mold cylinder base 11, a mold cylinder body 12, and a mold cylinder diameter 13. In this embodiment, the outer circumference of the mold cylinder body and the outer circumference of the mold cylinder diameter are in an integrated structure, forming a cylindrical mold cylinder body.

[0059] The mold cylinder diameter 13 is internally provided with a matching sliding cavity 19, which is arranged in a variable-diameter structure between the mold cylinder inner cavity 13.

[0060] The bottom of the mold cylinder base 11 is provided with a center positioning protrusion 14 and four seat ribs 15, which are arranged in a cross-shaped structure around the center positioning protrusion 14. A plurality of fixed bosses 16 are arranged on the outer circumference of the mold cylinder base 11 corresponding to the four seat ribs 15, and the fixed bosses 16 are provided with fixed holes 17. The fixed bosses 16 and the fixed holes 17 are fixedly connected with the lower mold plate 200 in the mold plate assembly of the vertical injection molding machine.

[0061] The first oil injection hole 3 is radially arranged on the mold cylinder body 12, and the first oil injection joint 4 is connected to the first oil injection hole 3.

[0062] The oil valve cavity 5 is radially arranged on the mold cylinder body 12, and the oil valve cavity 5 penetrates the mold cylinder inner cavity 10 of the mold cylinder body 12. The outer side of the oil valve cavity 5 is provided with a mold cylinder body flange 18.

[0063] The disc full oil valve 6 is connected to the mold cylinder body flange 18, and the full oil valve flange 7 is connected to the disc full oil valve 6.

[0064] The second oil injection hole 8 is arranged on the disc full oil valve 6, and the second oil injection joint 9 is connected to the second oil injection hole 8.

[0065] The cavity diameter of the mold cylinder inner cavity 10 is greater than the inner diameter of the mold cylinder diameter 13, and the mold cylinder diameter 13 cooperates with the outer diameter of the mold cylinder mandrel 2 to form a dynamic seal. The inner diameter of the mold cylinder diameter 13 and the mold cylinder inner cavity 10 are also arranged in a stepped structure, which can ensure the mold closing and opening force and facilitate the realization of an integrated sealing structure. The mold cylinder diameter 13 and the mold cylinder body 12 adopt a straight cylinder structure, and only the stepped structure between the mold cylinder inner cavity and the inner diameter of the mold cylinder diameter is needed to realize the integrated sealing structure.

[0066] The mold cylinder core shaft 2 comprises a core shaft body 21 and a core shaft connecting part 22, and the core shaft connecting part 22 is arranged outside the integrated mold cylinder sleeve 1 to realize the fixed connection with the lower mold plate 100. The inside of the core shaft body 21 is provided with a core shaft inner cavity 23, which can reduce the weight of the core shaft body, reduce the mold opening and closing force, and save the cost. The core shaft body 21 is a stepped structure.

[0067] A plurality of sealing groove structures are arranged on the outer wall of the core shaft body 21 matched with the mold cylinder bore 13, and sealing elements are arranged in the sealing groove structures. The sealing groove structures comprise a dynamic sealing groove 30, a wear-resistant ring groove 40, a U-shaped sealing groove 50 and a dust sealing groove 60. The dynamic sealing groove 30 is provided with a pull rod seal 31, the wear-resistant ring groove 40 is provided with a wear-resistant ring 41, the U-shaped sealing groove 50 is provided with a U-shaped sealing element 51, and the dust sealing groove 60 is provided with a dustproof sealing element 61.

[0068] In application, the bottom 11 of the integrated mold cylinder 1 is connected with the lower plate surface of the lower mold plate 200, the core shaft connecting part 22 of the mold cylinder core shaft 2 is connected with the lower mold plate 100 through a connecting element, and then the mold is closed by high-pressure injection through the first oil injection joint 4 and / or the second oil injection joint 9. The oil in the mold cylinder inner cavity 10 is pumped out through the first oil injection joint 4 and / or the second oil injection joint 9 to realize mold opening.

[0069] The integrated mold cylinder structure in the above embodiment sets the mold cylinder sleeve as an integrated structure, does not need to set a mold cylinder lower cover, reduces the production of parts of the whole mold cylinder, and reduces the production cost. Moreover, since the integrated mold cylinder sleeve is adopted, only the mold cylinder core shaft and the integrated mold cylinder sleeve need to be assembled during installation, a dynamic sealing structure is formed, the installation process is simplified under the premise of ensuring the use performance of the mold cylinder, and the maintenance difficulty and time cost are reduced.

[0070] At the same time, since only the dynamic sealing cooperation between the mold cylinder core shaft and the integrated mold cylinder sleeve is adopted, the injection defect caused by loose parts or improper cooperation is reduced. In use, the high-pressure locking performance of the integrated mold cylinder structure is greatly improved. Since the mold cylinder lower cover is not adopted, only the thermal expansion of the material of the integrated mold cylinder sleeve exists, and the mismatching problem caused by the thermal expansion between the existing cylinder sleeve and the mold cylinder lower cover is avoided, so that the thermal expansion matching performance is optimized, the deformation and failure caused by the slight difference in material composition leading to the thermal expansion of the mold cylinder sleeve and the mold cylinder lower cover is effectively reduced, the stability and reliability of the equipment are improved, and the service life of the mold cylinder is prolonged.

[0071] The above embodiments are only some of the embodiments of the present application, but not all the embodiments. Meanwhile, based on the embodiments described in the present application, all other embodiments obtained by those skilled in the art on the basis of the technical solutions of the present application without creative labor shall belong to the protection scope of the present application.

Claims

1. An integrated mold cylinder structure, characterized in that: It includes an integrated mold cylinder sleeve (1) and a mold cylinder mandrel (2). The mold cylinder mandrel (2) is slidably disposed inside the integrated mold cylinder sleeve (1). A composite sliding seal structure is provided at the sliding fit between the mold cylinder mandrel (2) and the integrated mold cylinder sleeve (1).

2. The integrated mold cylinder structure according to claim 1, characterized in that: The composite sliding seal structure includes multiple sealing grooves on the inner wall of the integrated mold cylinder sleeve and various sealing elements disposed inside the sealing grooves; or the composite sliding seal structure includes multiple sealing grooves on the outer wall of the mold cylinder mandrel and various sealing elements disposed inside the sealing grooves.

3. The integrated mold cylinder structure according to claim 2, characterized in that: The sealing groove includes a dynamic sealing groove (30), a wear-resistant ring groove (40), a U-shaped sealing groove (50), and a dust sealing groove (60).

4. The integrated mold cylinder structure according to claim 3, characterized in that: The sealing components include a pull rod seal (31) disposed inside the dynamic sealing groove (30), a wear-resistant ring (41) disposed inside the wear-resistant ring groove (40), a U-shaped seal (51) disposed inside the U-shaped sealing groove (50), and a dustproof seal (61) disposed inside the dust sealing groove (60).

5. The integrated mold cylinder structure according to any one of claims 1 to 4, characterized in that: The integrated mold cylinder sleeve (1) includes an integrally formed mold cylinder seat (11), mold cylinder body (12) and mold cylinder diameter (13). The integrated mold cylinder sleeve (1) has a mold cylinder inner cavity (10) inside. The mold cylinder diameter (13) has a mating sliding cavity (19) inside. The mating sliding cavity (19) and the mold cylinder inner cavity (10) are configured with a variable diameter structure.

6. The integrated mold cylinder structure according to claim 5, characterized in that: The composite sliding seal structure is installed on the inner wall of the sliding cavity (19).

7. The integrated mold cylinder structure according to claim 5, characterized in that: The diameter of the sliding cavity (19) is smaller than the diameter of the inner cavity (10) of the mold cylinder.

8. The integrated mold cylinder structure according to claim 5, characterized in that: The mold cylinder body (12) and the mold cylinder diameter (13) are arranged in an integral straight cylindrical structure, or the mold cylinder body (12) and the mold cylinder diameter (13) are arranged in an integral stepped structure.

9. The integrated mold cylinder structure according to any one of claims 1 to 4, characterized in that: The mold cylinder mandrel (2) includes a mandrel body (21) and a mandrel connecting part (22) integrally formed; the mold cylinder mandrel (2) has a mandrel inner cavity (23) inside.

10. The integrated mold cylinder structure according to claim 9, characterized in that: The composite sliding seal structure is set on the mandrel body (21) and is in the stroke section where it slides with the integrated mold cylinder sleeve (1) when the mold cylinder mandrel (2) is in working state.

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