A pressurizing device and a vulcanizing machine

Abstract

The present invention belongs to the technical field of vulcanizing equipment, and discloses a pressure device and a vulcanizing machine, wherein the pressure device is used to provide a clamping force to a mold, and the pressure device includes a base, a plurality of lower pull rods, a plurality of upper pull rods, a crossbeam, and a nitrogen supply assembly. The pressure device provided by the present invention applies pressure to the upper side of the mold through a moving part to provide a clamping force to the mold. Compared with the method of applying pressure upward to the lower side of the mold by a booster cylinder in the prior art, there is no need to overcome the gravity of the mold and related components, thereby reducing the performance requirements of the components providing pressure, and further reducing the cost of use. The pressure device provided by the present invention provides a driving force through a nitrogen supply assembly, which can eliminate the traditional oil cylinder and hydraulic station, avoid the risk of hydraulic oil leakage, and make the equipment and environment cleaner. The vulcanizing machine provided by the present invention includes the above-mentioned pressure device, so that the cost of use of the vulcanizing machine is low and it is convenient to change molds.

Description

Technical Field

[0001] The invention relates to the technical field of vulcanizing equipment, and in particular to a pressurizing device and a vulcanizing machine. Background Art

[0002] At present, vulcanizing machines are generally used for the vulcanization of tires. In order to ensure that sufficient clamping force is provided to the mold, a pressurizing device is usually required to apply pressure to the mold during the vulcanization stage to ensure the vulcanization quality.

[0003] The existing pressurizing device generally includes a booster oil cylinder arranged on a base, which pushes the lower support plate upward to exert a certain force on the lower mold, thereby providing the mold with the clamping force required for vulcanizing the tire. However, when the booster oil cylinder is applied, it is not only necessary to provide the mold with the clamping force required for vulcanizing the tire, but also to overcome the gravity of the lower support plate, the mold and the tire, which places high requirements on the performance of the booster oil cylinder and has a high cost of use. In other words, the oil cylinder and hydraulic station used in the existing pressurizing device are expensive. In addition, there is a risk of hydraulic oil leakage, which will pollute the equipment and the environment.

[0004] Therefore, the above problems need to be solved urgently. Summary of the invention

[0005] The purpose of the present invention is to provide a pressurizing device and a vulcanizing machine to solve the problems that the oil cylinder and hydraulic station used in the existing pressurizing device are high in cost, there is a risk of hydraulic oil leakage, and hydraulic oil leakage will pollute the equipment and the environment.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A pressurizing device, used for providing a clamping force to a mold, comprising:

[0008] a base configured to carry the mold;

[0009] A plurality of pull-down rods are distributed around the base;

[0010] A plurality of upper pull rods are detachably connected to the plurality of lower pull rods in a one-to-one correspondence;

[0011] A crossbeam, arranged on the plurality of upper pull rods, the crossbeam being located above the base;

[0012] The crossbeam includes a moving groove and a moving member. The crossbeam is provided with a moving groove in a vertical direction, the groove opening of the moving groove faces downward, the moving member is slidably matched with the moving groove, the moving member is sealedly connected to the groove wall of the moving groove, and a moving cavity is formed between the moving member and the groove wall of the moving groove;

[0013] The nitrogen supply assembly is configured to supply nitrogen into the moving chamber to push the moving part to move downward along the moving groove.

[0014] Preferably, the pressurizing device further comprises:

[0015] A heat plate is disposed between the moving part and the mold, the moving part transfers pressure to the upper side of the mold through the heat plate, and the heat plate is configured to isolate heat generated by the mold.

[0016] Preferably, the pressurizing device further comprises:

[0017] The limiting assembly is configured to limit the maximum moving distance of the moving part.

[0018] Preferably, the limiting component comprises:

[0019] A movable hole is vertically penetrated on the crossbeam;

[0020] A limiting bolt can pass through the movable hole and cooperate with the movable hole gap, the head of the limiting bolt can abut against the upper side of the cross beam, the maximum distance between the head of the limiting bolt and the upper side of the cross beam is less than the maximum movement distance of the moving part, and the tail of the limiting bolt is screwed to the hot plate.

[0021] Preferably, the limiting component further includes:

[0022] A connecting hole is vertically penetrated on the crossbeam;

[0023] An assembly hole is vertically penetrated on the heat plate, and the assembly hole is a stepped hole;

[0024] The connecting bolt can pass through the connecting hole and the assembly hole in sequence. The connecting bolt, the connecting hole and the assembly hole are all clearance-fitted. The connecting bolt includes an abutment surface. The tail of the connecting bolt is screwed to the upper side of the mold, and the abutment surface abuts against the step surface of the assembly hole.

[0025] Preferably, the pressurizing device further comprises:

[0026] The quick-release assembly is arranged between the lower pull rod and the upper pull rod to control the connection or disconnection of the lower pull rod and the upper pull rod.

[0027] Preferably, the quick-release assembly comprises:

[0028] A plum blossom head, arranged at the lower end of the upper pull rod;

[0029] A plum blossom groove is provided at the upper end of the lower pull rod, and the plum blossom head can be meshed and connected with the plum blossom groove;

[0030] The pull-down rod is rotatably arranged on the base, and an adjustment gap is reserved between the plum blossom head and the plum blossom groove to ensure that the pull-down rod can be rotated.

[0031] Preferably, the pressurizing device further comprises:

[0032] An adjustment component is disposed between the plurality of upper pull rods and the cross beam, and the adjustment component is configured to adjust the position of the cross beam on the plurality of upper pull rods.

[0033] Preferably, the adjustment component comprises:

[0034] A plurality of adjusting nuts are threadably matched with the plurality of upper pull rods in a one-to-one correspondence, and the plurality of adjusting nuts are respectively connected to a plurality of positions of the crossbeam;

[0035] A transmission chain is sleeved on the plurality of adjusting nuts and meshed with the plurality of adjusting nuts;

[0036] A servo motor is disposed on the crossbeam, and the servo motor is configured to drive the transmission chain to move back and forth.

[0037] A vulcanizing machine, characterized in that it comprises the above-mentioned pressurizing device, wherein the pressurizing device is used to provide clamping force to the mold.

[0038] Beneficial effects of the present invention:

[0039] 1. The pressurizing device provided by the present invention provides driving force through a nitrogen supply assembly. Compared with the existing pressurizing device that provides driving force through an oil cylinder, nitrogen is a clean energy source, which is easy to obtain and does not pollute the environment, and has a lower cost of use.

[0040] 2. The pressurizing device provided by the present invention provides driving force through a nitrogen supply assembly, which can eliminate the traditional oil cylinder and hydraulic station, avoid the risk of hydraulic oil leakage, and make the equipment and environment cleaner.

[0041] 3. The pressure-applying device provided by the present invention applies pressure to the upper side of the mold through a moving part to provide a clamping force to the mold. Compared with the method of using a booster cylinder to apply pressure upward to the lower side of the mold in the prior art, there is no need to overcome the gravity of the mold and related components, thereby reducing the performance requirements for the components providing pressure, and thus reducing the cost of use.

[0042] 4. The pressurizing device provided by the present invention can be disassembled from the lower pull rod during the mold changing process, so that the upper side of the mold will not be blocked, thereby providing a larger operating space for mold replacement and facilitating operation.

[0043] 5. There is no relative movement between the central mechanism and the base of the pressurizing device provided by the present invention, which can ensure the operating accuracy of the central mechanism.

[0044] 6. The vulcanizer provided by the present invention includes the above-mentioned pressurizing device, thereby reducing the use cost of the vulcanizer and facilitating mold change. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a rotational cross-sectional view of the pressurizing device provided by the present invention;

[0046] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0047] Figure 3 yes Figure 1 The enlarged view of point B in the middle;

[0048] Figure 4 It is a structural schematic diagram of the quick-release assembly provided by the present invention.

[0049] In the figure:

[0050] 1. Base; 2. Lower pull rod; 3. Upper pull rod; 4. Crossbeam; 41. Moving groove; 42. Moving part; 43. Moving cavity; 44. Sealing ring; 5. Hot plate; 6. Limiting assembly; 61. Movable hole; 62. Limiting bolt; 63. Connecting hole; 64. Assembly hole; 65. Connecting bolt; 651. Abutment surface; 7. Quick release assembly; 71. Plum blossom head; 72. Plum blossom groove; 8. Adjusting assembly; 81. Adjusting nut. DETAILED DESCRIPTION

[0051] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above drawings.

[0052] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0053] In the present application, the term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of a centrifugal vortex magnetic pump alone, the existence of a centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump at the same time, and the existence of a centrifugal vortex magnetic pump alone. In addition, the character " / " in the present application generally indicates that the objects associated before and after are in an "and / or" relationship.

[0054] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0055] In this application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerance caused by manufacturing, assembly, and use associated with a specific value, etc. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

[0056] In this application, it will be understood by those skilled in the art that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.

[0057] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0058] See also Figures 1 to 4 The present embodiment provides a pressurizing device, which is used to provide a clamping force to a mold (not shown in the figure). The pressurizing device includes a base 1, a plurality of lower pull rods 2, a plurality of upper pull rods 3, a crossbeam 4 and a nitrogen supply assembly (not shown in the figure).

[0059] The base 1 is configured to carry the mold. The base 1 is a prior art, and includes a plurality of components used in conjunction with the mold, such as a tooling for fixing the mold, which will not be described in detail in this embodiment.

[0060] Specifically, a plurality of lower pull rods 2 are distributed on the peripheral side of the base 1. A plurality of upper pull rods 3 are detachably connected to the plurality of lower pull rods 2 in a one-to-one correspondence. A crossbeam 4 is arranged on the plurality of upper pull rods 3, and the crossbeam 4 is located above the base 1. The crossbeam 4 includes a moving groove 41 and a moving part 42. The moving groove 41 is arranged on the crossbeam 4 in a vertical direction, and the notch of the moving groove 41 faces downward. The moving part 42 is slidably matched with the moving groove 41. The moving part 42 is sealedly connected to the groove wall of the moving groove 41, and a moving cavity 43 is formed between the moving part 42 and the groove wall of the moving groove 41. The nitrogen supply assembly is configured to supply nitrogen into the moving cavity 43 to push the moving part 42 to move downward along the moving groove 41.

[0061] The process of applying the clamping force: first, the nitrogen supply component supplies nitrogen into the moving cavity 43 to push the moving part 42 to move downward along the moving groove 41, and then the moving part 42 applies pressure to the upper side of the mold on the base 1, thereby providing the clamping force to the mold. At this point, the clamping force application is completed.

[0062] Mold changing process: first remove the upper tie rod 3 from the lower tie rod 2, then remove the crossbeam 4 from above the mold, then remove the mold from the base 1, then place another mold on the base 1, and finally assemble the upper tie rod 3 to the lower tie rod 2, and the mold changing is completed.

[0063] It is understandable that by applying pressure to the upper side of the mold through the moving part 42, so as to provide the mold clamping force to the mold, compared with the method of applying pressure to the lower side of the mold upward by the booster cylinder in the prior art, there is no need to overcome the gravity of the mold and related parts, so that the performance requirements of the parts providing pressure can be reduced, and the use cost can be reduced. It is also understandable that during the mold change process, the upper pull rod 3 can be disassembled from the lower pull rod 2, so that the upper side of the mold will not be blocked, thereby providing a larger operating space for changing the mold, which is convenient for operation. In addition, the driving force is provided by the nitrogen supply component. Compared with the existing pressurizing device providing the driving force through the cylinder, nitrogen is a clean energy, which is easy to obtain and does not pollute the environment, and the use cost is lower. In addition, the traditional oil cylinder and hydraulic station can be eliminated to avoid the risk of hydraulic oil leakage, and the equipment and environment are cleaner. In addition, there is no relative movement between the central mechanism of the pressurizing device and the base 1, which can ensure the operation accuracy of the central mechanism.

[0064] It should be noted that the nitrogen supply assembly and its working principle are both prior art, so this embodiment will not be described in detail. It should also be noted that the mold is prior art, and the mold generally includes an upper mold and a lower mold. In this embodiment, the moving part 42 is used to apply pressure to the upper side of the upper mold.

[0065] Preferably, the pressurizing device further comprises a hot plate 5, which is arranged between the moving part 42 and the mold, and the moving part 42 transmits the pressure to the upper side of the mold through the hot plate 5, and the hot plate 5 is configured to isolate the heat generated by the mold. Such an arrangement can reduce the influence of the heat generated by the mold on the pressurizing device. It should be noted that the structure and working principle of the hot plate 5 are both prior art, and the hot plate 5 generally comprises a first plate and a second plate stacked, which will not be described in detail.

[0066] In order to prevent the moving member 42 from being disengaged from the moving groove 41 during use, thereby causing inconvenience, the pressurizing device further includes a limit assembly 6 , which is configured to limit the maximum moving distance of the moving member 42 .

[0067] It should be noted that, in this embodiment, the crossbeam 4 and the hot plate 5 are both arranged in a circular plate shape, four motion grooves 41 are arranged, and the four motion grooves 41 are evenly distributed on the crossbeam 4 around the axis of the crossbeam 4, four moving parts 42 are arranged corresponding to the number of motion grooves 41, four limit assemblies 6 are arranged, and the four limit assemblies 6 are evenly distributed on the crossbeam 4 around the axis of the crossbeam 4, and multiple motion grooves 41 and multiple limit assemblies 6 are arranged one by one. In this arrangement, by applying pressure to multiple positions of the hot plate 5 through the four moving parts 42, the upper side of the mold can be subjected to more uniform force.

[0068] It should also be noted that Figure 1The section line is a broken line, specifically, half is used to section the moving groove 41 and the moving part 42, and the other half is used to section the limiting component 6, so that the matching relationship between the limiting component 6 and the moving part 42 can be more clearly displayed.

[0069] In addition, in the present embodiment, a sealing ring 44 is used to seal between the moving part 42 and the moving groove 41, and the sealing ring 44 is a wearing part and needs to be replaced regularly. In order to improve the convenience of replacing the sealing ring 44, in the present embodiment, the limiting assembly 6 includes a movable hole 61 and a limiting bolt 62. The movable hole 61 is vertically penetrated on the beam 4. The limiting bolt 62 can pass through the movable hole 61 and fit with the movable hole 61. The head of the limiting bolt 62 can abut against the upper side of the beam 4. The maximum distance between the head of the limiting bolt 62 and the upper side of the beam 4 is less than the maximum movement distance of the moving part 42. The tail of the limiting bolt 62 is screwed to the hot plate 5. Figure 3 As shown in FIG, the distance between the head of the limiting bolt 62 and the upper side of the crossbeam 4 is a.

[0070] When the sealing ring 44 needs to be replaced, the tail of the limiting bolt 62 is first removed from the hot plate 5, and then the limiting bolt 62 is taken out from the movable hole 61, and then the moving part 42 can be taken out from the moving groove 41, so as to replace the sealing ring 44 used to seal the gap between the moving part 42 and the moving groove 41. It can be understood that the limiting bolt 62 has a simple structure and is easy to operate. It should be noted that the specific model of the limiting bolt 62 can be selected according to the actual application scenario, and this embodiment does not make specific requirements and restrictions on this.

[0071] In order to make the hot plate 5 fit more closely with the upper side of the mold, so that the pressure applied to the upper side of the mold is more uniform, the limit assembly 6 also includes a connecting hole 63, an assembly hole 64 and a connecting bolt 65. The connecting hole 63 is arranged on the beam 4 in the vertical direction. The assembly hole 64 is arranged on the hot plate 5 in the vertical direction, and the assembly hole 64 is a step hole. The connecting bolt 65 can pass through the connecting hole 63 and the assembly hole 64 in sequence, and the connecting bolt 65 and the connecting hole 63 and the assembly hole 64 are all clearance fits. The connecting bolt 65 includes an abutting surface 651, and the tail of the connecting bolt 65 is screwed with the upper side of the mold, so that the abutting surface 651 abuts against the step surface of the assembly hole 64. In this way, after the abutting surface 651 of the connecting bolt 65 abuts against the step surface of the assembly hole 64, the connecting bolt 65 is gradually tightened, so that the hot plate 5 can be pressed against the upper side of the mold.

[0072] It is understandable that the hot plate 5 is locked to the upper side of the mold by the connecting bolts 65, so as to ensure that the hot plate 5 and the upper side of the mold fit more closely. It is also understandable that by inserting the connecting bolts 65 through the connecting holes 63 and the assembly holes 64 in sequence and then connecting to the upper side of the mold, it is easier to load and unload. It should be noted that the specific model of the connecting bolts 65 can be selected according to the actual application scenario, and this embodiment does not make specific requirements and restrictions on this.

[0073] Preferably, the pressurizing device includes a quick release assembly 7, which is arranged between the lower pull rod 2 and the upper pull rod 3 to control the connection or disconnection of the lower pull rod 2 and the upper pull rod 3. Such an arrangement helps to improve the efficiency of mold change. In this embodiment, the quick release assembly 7 includes a plum blossom head 71 and a plum blossom groove 72, and the plum blossom head 71 is arranged at the lower end of the upper pull rod 3. The plum blossom groove 72 is arranged at the upper end of the lower pull rod 2, and the plum blossom head 71 and the plum blossom groove 72 can be meshed and connected. It should be noted that the quick-release structure composed of the plum blossom head 71 and the plum blossom groove 72 is a prior art. Specifically, after the plum blossom head 71 is inserted into the plum blossom groove 72, the plum blossom head 71 or the plum blossom groove 72 is rotated by a preset angle so that the plum blossom head 71 and the plum blossom groove 72 are engaged, thereby realizing the connection between the two. Conversely, the plum blossom head 71 or the plum blossom groove 72 is rotated so that the plum blossom head 71 and the plum blossom groove 72 are disengaged, that is, the plum blossom head 71 can be taken out of the plum blossom groove 72, thereby realizing the separation of the two.

[0074] Further, the lower pull rod 2 is rotatably arranged on the base 1, and an adjustment gap is reserved between the plum blossom head 71 and the plum blossom groove 72 to ensure that the lower pull rod 2 can be rotated. Such an arrangement makes it easier to rotate the reset member, that is, it makes it easier to rotate the plum blossom groove 72, and the operation is convenient. It should be noted that the setting of the adjustment gap is well known to those skilled in the art and will not be described in detail.

[0075] It should be added that the movement distance of the moving part 42 is limited by the depth of the moving groove 41. However, in order to ensure production efficiency, the moving groove 41 will be set shallower to shorten the movement path and more efficiently apply pressure to the mold, which will cause the pressure-applying device to be unable to close multiple molds with large height differences.

[0076] In order to make the pressurizing device applicable to molds of various heights, the pressurizing device further includes an adjusting assembly 8, which is disposed between the plurality of upper tie rods 3 and the crossbeam 4, and is configured to adjust the position of the crossbeam 4 on the plurality of upper tie rods 3. Such an arrangement can adapt to molds of various heights, and the height of the crossbeam 4 can be adjusted so that the moving part 42 can apply pressure to molds of various heights.

[0077] Specifically, the adjustment assembly 8 includes a plurality of adjustment nuts 81, a transmission chain (not shown in the figure) and a servo motor (not shown in the figure). The plurality of adjustment nuts 81 are threadedly matched with the plurality of upper pull rods 3 in a one-to-one correspondence, and the plurality of adjustment nuts 81 are respectively connected to a plurality of positions of the crossbeam 4. The transmission chain is sleeved on the plurality of adjustment nuts 81 and meshed with the plurality of adjustment nuts 81. The servo motor is arranged on the crossbeam 4, and the servo motor is configured to drive the transmission chain to move back and forth. It can be understood that the transmission chain is driven to move by the servo motor, and the transmission chain is meshed with the plurality of adjustment nuts 81, that is, the plurality of adjustment nuts 81 can be driven to rotate at the same time, thereby realizing synchronous driving of the crossbeam 4 to lift and lower at multiple positions, which is more efficient. It should be noted that the connection method between the servo motor and the transmission chain is a prior art.

[0078] This embodiment also provides a vulcanizer, which includes the above-mentioned pressurizing device, and the pressurizing device is used to provide a clamping force to the mold. It can be understood that the vulcanizer including the above-mentioned pressurizing device has low use cost and is convenient for mold change.

[0079] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pressurizing device for providing a clamping force to a mold, characterized in that: The pressurizing device comprises: A base (1) configured to carry the mold; A plurality of pull-down rods (2) distributed around the base (1); A plurality of upper pull rods (3) are detachably connected to the plurality of lower pull rods (2) in a one-to-one correspondence; A crossbeam (4) is arranged on the plurality of upper pull rods (3), and the crossbeam (4) is located above the base (1); The crossbeam (4) comprises a moving groove (41) and a moving member (42); the crossbeam (4) is provided with a moving groove (41) in a vertical direction, the groove opening of the moving groove (41) faces downward, the moving member (42) is slidably matched with the moving groove (41), the moving member (42) and the groove wall of the moving groove (41) are sealed, and a moving cavity (43) is formed between the moving member (42) and the groove wall of the moving groove (41); a nitrogen supply assembly configured to supply nitrogen into the moving chamber (43) to push the moving member (42) to move downward along the moving groove (41); The pressurizing device also includes: a heat plate (5) disposed between the moving part (42) and the mold, the moving part (42) transmitting pressure to the upper side of the mold through the heat plate (5), and the heat plate (5) being configured to isolate heat generated by the mold; The pressurizing device also includes: A limit assembly (6) configured to limit a maximum movement distance of the moving member (42); The limiting component (6) comprises: A movable hole (61) is provided on the crossbeam (4) and penetrates the crossbeam (4) in a vertical direction; The limiting bolt (62) can pass through the movable hole (61) and is loosely fitted with the movable hole (61); the head of the limiting bolt (62) can abut against the upper side of the cross beam (4); the maximum distance between the head of the limiting bolt (62) and the upper side of the cross beam (4) is smaller than the maximum moving distance of the moving part (42); and the tail of the limiting bolt (62) is screwed to the hot plate (5).

2. A pressurizing device according to claim 1, characterized in that: The limiting component (6) further comprises: A connecting hole (63) is provided on the crossbeam (4) and penetrates the crossbeam (4) in a vertical direction; An assembly hole (64) is provided on the heat plate (5) and penetrates in a vertical direction, and the assembly hole (64) is a stepped hole; The connecting bolt (65) can pass through the connecting hole (63) and the assembly hole (64) in sequence. The connecting bolt (65) is clearance-fitted with the connecting hole (63) and the assembly hole (64). The connecting bolt (65) includes a contact surface (651). The tail of the connecting bolt (65) is screwed to the upper side of the mold, and the contact surface (651) contacts the step surface of the assembly hole (64).

3. A pressurizing device according to claim 1, characterized in that: The pressurizing device also includes: A quick-release assembly (7) is arranged between the lower pull rod (2) and the upper pull rod (3) to control the connection or disconnection of the lower pull rod (2) and the upper pull rod (3).

4. A pressurizing device according to claim 3, characterized in that: The quick-release assembly (7) comprises: A plum blossom head (71) is arranged at the lower end of the upper pull rod (3); A plum blossom groove (72) is arranged at the upper end of the lower pull rod (2), and the plum blossom head (71) and the plum blossom groove (72) can be meshed and connected; The lower pull rod (2) is rotatably arranged on the base (1), and an adjustment gap is reserved between the plum blossom head (71) and the plum blossom groove (72) to ensure that the lower pull rod (2) can be rotated.

5. A pressurizing device according to claim 1, characterized in that: The pressurizing device also includes: An adjustment component (8) is disposed between the plurality of upper pull rods (3) and the cross beam (4), and the adjustment component (8) is configured to adjust the position of the cross beam (4) on the plurality of upper pull rods (3).

6. A pressurizing device according to claim 5, characterized in that: The regulating component (8) comprises: A plurality of adjusting nuts (81) are threadably matched with the plurality of upper pull rods (3) in a one-to-one correspondence, and the plurality of adjusting nuts (81) are respectively connected to a plurality of positions of the crossbeam (4); A transmission chain, sleeved on the plurality of adjusting nuts (81) and meshing with the plurality of adjusting nuts (81); A servo motor is arranged on the crossbeam (4), and the servo motor is configured to drive the transmission chain to move back and forth.

7. A vulcanizing machine, characterized in that: It comprises a pressurizing device as described in any one of claims 1 to 6, wherein the pressurizing device is used to provide a clamping force to the mold.

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