CN113681836A - Forming mold, vulcanizing machine and rubber part forming method - Google Patents

Abstract

The invention relates to a forming die, a vulcanizing machine and a rubber part forming method. The forming die is used for shaping the rubber spare that has the skeleton, includes: a first template; the second template is arranged below the first template; the forming body is arranged between the first template and the second template and is provided with a through hole which is communicated up and down; the supporting part is positioned in the through hole and used for supporting the framework; the through hole, the first template and the second template form a cavity in a die closing state of the forming die, and the cavity is used for filling injection raw materials to form a rubber piece; in the mold-released state of the molding die, the molded body is released from the rubber member. The invention can mold the rubber part with the framework, has simple structure, reduces the molding cost, is convenient to operate and improves the production efficiency.

Description

Forming mold, vulcanizing machine and rubber part forming method

Technical Field

The invention relates to the technical field of rubber molding, in particular to a molding die, a vulcanizing machine and a rubber piece molding method.

Background

The rubber molding mode comprises compression molding and injection molding, and is realized by vulcanization equipment. For the rubber members with the functions of shock absorption and noise reduction, such as shock absorption rubber supports, the rubber members are formed by tightly combining a plurality of layers of steel plates as frameworks and rubber, and the forming is more complicated compared with the forming by using pure rubber. It is difficult to mold by a conventional mold for molding a rubber product or a mold for injecting a rubber product.

Therefore, designing a molding die for a rubber product having a framework to meet the production of a vulcanization device is a technical problem which needs to be solved urgently at present.

Therefore, in view of the above-mentioned drawbacks, the present inventors have studied and designed a forming mold by combining the experience and results of the related industries for many years through their extensive research and design to overcome the above-mentioned drawbacks.

Disclosure of Invention

The invention aims to provide a forming die, a vulcanizing machine and a rubber piece forming method. The device is simple in structure and convenient to operate, solves the technical problems in the prior art, and effectively improves the production benefit.

In order to achieve the above object, the present invention provides a molding die for molding a rubber member having a skeleton, the molding die comprising: a first template; the second template is arranged below the first template; the forming body is arranged between the first template and the second template and is provided with a through hole which is communicated up and down; the supporting part is positioned in the through hole and used for supporting the framework; when the forming mold is in a mold closing state, the through hole, the first template and the second template form a cavity, and the cavity is used for filling injection raw materials to form the rubber piece; and under the demolding state of the forming mold, the forming body is separated from the rubber piece.

In some embodiments, the support portion includes a first support portion and a second support portion, wherein the first support portion is a receiving groove disposed on a surface of the second form board facing the first form board, and the receiving groove is used for supporting a lower framework of the rubber member; the second supporting portion is a step arranged on the through hole and close to the periphery of the first template, and the step is used for supporting an upper framework of the rubber piece.

In some embodiments, a lower rubber sheet is arranged between the accommodating groove and the lower framework; and/or an upper rubber sheet is arranged between the first template and the upper framework.

In some embodiments, an inner wall of the through hole protrudes toward a radially inner side to form a protrusion.

In some embodiments, the forming body comprises a first slide block and a second slide block, the first slide block and the second slide block are respectively slidably arranged on the second template, and the second slide block and the first slide block can slide towards each other or slide away from each other; wherein the first slide block and the second slide block are integrated in a mold-closed state of the molding die; and under the demoulding state of the forming mould, the first sliding block and the second sliding block are separated.

In some embodiments, further comprising: the supporting plate is arranged below the second template; one or more inclined guide groups which are arranged on the supporting plate, are V-shaped or inverted V-shaped, and comprise a first inclined guide column and a second inclined guide column, wherein the first inclined guide column penetrates through the second template and the first sliding block, and the second inclined guide column penetrates through the second template and the second sliding block; the second template is lifted relative to the supporting plate, so that the first inclined guide post and the second inclined guide post stir the first sliding block and the second sliding block to slide oppositely or reversely.

In some embodiments, two sides of the first slider and/or two sides of the second slider are respectively provided with a guide, the guide extends along the sliding direction of the first slider and the second slider, and the first slider and/or the second slider respectively slide along the guide.

In some embodiments, the first template extends towards the second template with a locking portion, an inner surface of the locking portion is matched with an outer surface of the forming body, and the forming body is located in the locking portion in a state that the forming body is combined.

In some embodiments, a surface of the second template facing the first template is provided with a limiting groove; the free end of the locking part can be embedded into the limiting groove.

In some embodiments, further comprising: and the supporting plates are fixed on two opposite sides of the second template.

In some embodiments, the second template is provided with positioning holes or positioning pins; the supporting plate is provided with a positioning pin or a positioning hole; the positioning hole corresponds to the positioning pin, and the positioning pin can extend into the positioning hole.

In some embodiments, the second template is provided with a catch or latch; the supporting plate is provided with a locking hook or a locking buckle; the supporting plate and the second template are locked and fixed by matching the lock hook and the lock catch.

According to the present invention there is also provided a vulcanizer comprising: a forming die as claimed in any preceding embodiment.

In some embodiments, the method comprises: a frame; the upper hot plate is arranged on the frame; the lower hot plate is arranged on the frame, wherein the upper hot plate can be relatively close to or far away from the lower hot plate; wherein the first template of the molding mold is arranged on the upper hot plate, and the second template of the injection molding mold is arranged on the lower hot plate.

In some embodiments, further comprising: and the jacking mechanism is used for jacking the second template so as to separate the second template from the supporting plate of the injection molding mould.

According to the invention, the invention also provides a rubber part molding method, which is characterized by being applied to the molding die of any embodiment, and the rubber part molding method comprises the following steps: placing a skeleton on the support portion of the molding die; closing the forming die; injecting rubber feedstock into the chamber; and demolding the forming mold.

In some embodiments, the support portion includes a first support portion provided on the second form and a second support portion provided at a periphery of the through-hole of the molding body; placing a skeleton on the support portion of the molding die includes: and placing the lower framework on the first supporting part, and placing the upper framework on the second supporting part.

In some embodiments, the method further comprises: a lower rubber sheet is placed between the lower framework and the first supporting part; and/or an upper rubber sheet is placed between the upper framework and the upper template.

In some embodiments, the forming die comprises a first slide block, a second slide block and an inclined guide post; the forming die assembly comprises: the second template ascends or descends relative to the inclined guide post, so that the inclined guide post pulls the first slide block and the second slide block to slide oppositely and combine with each other; the demolding of the forming mold comprises: the second template descends or ascends relative to the inclined guide post, so that the inclined guide post stirs the first sliding block and the second sliding block to slide backwards and separate.

As can be seen from the above, the injection mold of the present invention has the following effects:

1. the mold is simple in design, the production efficiency is improved, the processing cost is reduced, the operation is convenient, and the problem of difficult mold stripping is solved; the appearance of the product is beautiful, the integral grade is improved, and the novel field of the vulcanization technology is broken through.

2. The product has excellent performance, stable flatness and perfect appearance.

The details of the present invention can be obtained from the following description and the attached drawings.

Drawings

The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate examples of the present invention and, together with the description, further serve to explain the principles of the invention and to enable a person skilled in the pertinent art to make and use the disclosure.

Fig. 1 shows a schematic structural view of a rubber member of an embodiment of the present invention.

Fig. 2 shows a schematic half-sectional structure of the forming die of the present invention.

Fig. 3A shows a top view of a first template of the present invention.

Fig. 3B shows a front view of the first template of the present invention.

FIG. 4A shows a schematic view of the shaped body of the present invention in a split state.

Fig. 4B shows a schematic diagram of the demolded state of the molding die of the present invention.

Fig. 5 shows a flow chart of the rubber member molding method of the present invention.

Detailed Description

As shown in fig. 1 to 4B, an embodiment of the present invention provides a forming mold for forming a rubber member having a skeleton (shown in fig. 1). The rubber part can be used as a supporting seat of building facilities such as bridges, tracks, houses and the like, and plays a role in supporting and isolating shock. The rubber member may comprise one or more skeletons (e.g. an upper skeleton 2 and a lower skeleton 3) and a rubber body 3 integrated with the skeletons. The material of the framework can be a metal material with certain rigidity, such as a steel sheet, so as to improve the rigidity and the strength of the rubber piece. The whole rubber part can be cylindricly, and wherein, first skeleton 2 and second skeleton 3 can be for circular steel sheet, are located the upper and lower both ends of the rubber body 3 respectively, and the periphery wall of the rubber body 3 forms the depressed part towards radial inboard.

The molding die may include a first template 4, a second template 7, and a molded body 5.

The first template 4 may be an upper template of the forming mold, and the second template 7 may be a lower template of the forming mold, and is disposed below the first template 4.

The molded body 5 is disposed between the first template 4 and the second template 7. The molded body 5 has a through hole communicating with each other in the up-down direction, and a support portion for supporting a frame of the rubber member is provided in the through hole.

In the closed state of the molding die 100, the through hole, the first mold plate 4, and the second mold plate 7 together form a closed cavity, which is filled with an injection material, which may be rubber in a molten state, to mold a rubber member. In the state where the molding die 100 is released from the mold, the molded body 5 is released from the rubber member. Wherein the shape of the cavity is matched with the shape of the rubber piece.

In one example, the first mold plate 4 may be provided with an injection port 15 communicating with the cavity, and the molten injection rubber raw material fills the cavity from top to bottom through the injection port of the first mold plate 4. In another example, an injection port communicating with the cavity may be opened in the second mold plate 4, and the molten injection rubber raw material fills the cavity from bottom to top through the injection port of the second mold plate 4. Wherein, the cavity is filled from top to bottom by the injection raw materials, the filling is quicker by the self gravity of the injection raw materials, and the molding efficiency is improved. The injection raw materials fill the cavity from bottom to top, the flow rate is slow, the filling is more uniform and full, and the performance of the molded rubber piece is more stable.

The injection port 15, which may also be referred to as a gate, may be located at a middle position and formed in a bell mouth shape with a small top and a large bottom, so that feeding is faster, more efficient, and feeding is also balanced.

The upper mold plate 4 can be connected as a fixed mold plate to an upper hot plate on a vulcanizer and can be lifted up and down to be close to or away from the molded body 5 following the upper hot plate. The lower template 7 can be used as a movable template to be connected with a lower hot plate on a vulcanizing machine and moves along the horizontal direction along with the lower hot plate. In use, the shaped body 5 is positioned on the second template 7, and the framework can be placed on the supporting part in the through hole of the shaped body 5 and fixed. Then, the molding die 100 is clamped, specifically, the first template 4 moves close to the molded body 5 following the upper hot plate on the vulcanizer to the opening of the through hole press-fitted to the molded body 5, so that the through hole, the first template 4 and the second template 7 together form a cavity, and the clamping operation is completed. Next, the molten rubber liquid is injected into the injection port, the entire cavity is filled, pressure is maintained by the upper and lower hot plates, cooling is performed, and the cooled rubber liquid is bonded to the frame to mold the rubber body 200. After that, the molding die 100 is released, specifically, the first die plate 4 is moved away from the molded body 5 following the upper hot plate, the second die plate 7 is moved and pulled out in the horizontal direction together with the molded body 5 following the lower hot plate, and then the molded body 5 is released from the rubber member 200, completing the release of the molding die.

According to the forming die provided by the embodiment of the invention, the supporting part for supporting the framework is arranged in the through hole of the forming body 5, the injection raw material is filled into the cavity at one time by using an injection process and is fully combined with the framework to form the rubber part 200 with the framework, the structure is simple, and the forming cost is reduced; the injection process is adopted for one-step molding, the operation is convenient, and the production efficiency is improved.

In some embodiments, the support portions may include a first support portion 54 and a second support portion 55 for supporting the upper frame 2 and the lower frame 3 of the rubber member, respectively. Specifically, the first support portion is an accommodating groove provided on a surface (upper surface) of the second form 7 facing the first form, for supporting the lower frame 3 of the rubber member. The second support portion is a step provided at the edge of the through hole of the molding body 5 adjacent to the first form 4, and the step is used to support the upper frame 2 of the rubber member.

When in use, the lower framework 3 can be firstly placed in the containing groove of the second template 7, and then the upper framework 4 is placed on the upper edge step of the through hole of the forming body 5. Then, the molded body 5 and the second platen 7 are moved to below the first platen 4 following the lower hot plate, and the first platen 4 is pressed to the through hole opening of the molded body 5 following the lower hot plate, thereby completing mold clamping. Then, injection, pressure maintaining, cooling and demolding are performed.

The lower frame 3 and the upper frame 2 are effectively supported by the accommodating groove of the second template 7 and the step at the edge of the through hole of the forming body 5, so that the rubber body 1, the upper frame 2 and the lower frame 3 can be combined together to form the rubber part 200.

In one example, the receiving groove of the second mold plate 7 is circular, and the diameter thereof is slightly larger than the diameter of the lower frame 3, so that a gap is formed between the edge of the lower frame 3 and the inner peripheral wall of the receiving groove, so that the injected rubber solution flows into the gap and sufficiently contacts with the lower frame 4, the contact area is increased, and the molded rubber body is combined with the lower frame 3 more tightly and firmly.

Similarly, the diameter of the step on the upper periphery of the through hole of the forming body 5 is slightly larger than the diameter of the upper framework 2, so that a gap is formed between the edge of the upper framework 2 and the step, so that the injected rubber liquid flows into the gap and is fully contacted with the upper framework 2, the contact area is increased, and the formed rubber body is combined with the upper framework 2 more tightly and firmly.

Further, a lower rubber sheet is arranged between the accommodating groove of the second template 7 and the lower framework 3. The accommodating groove of lower skeleton 3 and second template 7 probably produces the deformation because factors such as machining error, being heated, atress, leads to lower skeleton 3 and the relative surperficial unevenness of accommodating groove, and the gap between the two is inconsistent, has compensatied the gap between lower skeleton 3 and the accommodating groove through lower sheet rubber, and on the one hand, lower skeleton 3 can be abundant through lower sheet rubber and the contact of accommodating groove to form effectual support to lower skeleton 3. On the other hand, the lower rubber sheet at high temperature is integrated with the molten rubber liquid injected into the cavity, the formed rubber body 1 completely wraps the lower framework 3, the bottom surface of the formed rubber part is more flat, and the forming precision of the rubber part 200 is improved.

Similarly, an upper rubber sheet is provided between the first form 4 and the upper frame 2. Compensate through last film blanket 3 surface unevenness lead to go up the skeleton 3 and the gap between the first template 4, on the one hand, go up skeleton 2 through last film blanket can be abundant contact with first template 4. On the other hand, the upper rubber sheet at high temperature is integrated with the molten rubber liquid injected into the cavity, the upper framework 3 is completely wrapped in the formed rubber body 1, the top surface of the formed rubber part 200 is smoother, and the forming precision of the rubber part 200 is improved.

It should be noted that, while the lower rubber sheet is disposed between the receiving groove of the second form 7 and the lower frame 3, the upper rubber sheet is disposed between the first form 4 and the upper frame 2. The lower rubber sheet may be provided only between the receiving groove of the second form 7 and the lower frame 3. Or an upper rubber sheet is arranged between the first template 4 and the upper framework 2.

In some embodiments, the inner wall of the through hole of the molded body 5 is protruded toward the radial inner side to form a protrusion 56 corresponding to the recess of the rubber member 200, thereby molding the rubber member 200 having the recess. But not limited thereto, the shape of the inner wall of the through-hole may be adapted to the desired shape of the rubber member 200 of the gel 1. In other words, the shape of the cavity formed by the forming mold 100 of the present invention can be adjusted according to the required shape of the rubber member 200. Such as square, oval, cylindrical, etc.

In some embodiments, the forming body 5 includes a first slider 51 and a second slider 52, the first slider 51 and the second slider 52 are respectively slidably disposed on the second mold plate 7, and the first slider 51 and the second slider 52 can slide toward each other or slide away from each other. Wherein, in the mold closing state of the molding mold, the first slider 51 and the second slider 52 are integrated; in the mold-released state of the molding die, the first slider 51 and the second slider 52 are separated.

The first slider 51 and the second slider 52 divide the through hole of the molding body 5 into two semicircular holes to form a half structure. During the mold clamping process, the first slider 51 and the second slider 52 can slide toward each other in a horizontal direction (e.g., left-right direction), i.e., move toward each other, so that the first slider 51 and the second slider 52 are combined to form a complete through hole. During the demolding process of the forming mold, the block 52 divides the through hole of the forming body 5 into two semi-circular holes to form a half structure. During the demolding of the molding die, the first slider 51 and the second slider 52 may be slid back to back in a horizontal direction (e.g., left-right direction) and moved away from each other to separate the first slider 51 and the second slider 52 so as to be detached from the molded rubber member.

The first sliding block 51 and the second sliding block 52 slide oppositely or slide back to back, so that the combined or split operation is facilitated, particularly, in the demolding process, demolding can be easily completed without disassembling the molded body 5, the operation is facilitated, the labor cost is reduced, and the molding efficiency is further improved.

The molded body 51 is not limited to the separable or integrated structure described above, and may be an inseparable structure, that is, an integrated structure in another embodiment. The molded rubber member can be moved relative to the integrated molded body 51 by lifting it up and detached from the molded body 51.

In some embodiments, the forming mold of the present invention further includes a supporting plate 8 and an inclined guide post 12 in addition to the upper mold plate 4, the lower mold plate 7 and the forming body 5.

The pallet 8 is disposed below the second form 7. The second template 7 may be attached to the lower hot plate of the vulcanizer by means of a pallet 8. Specifically, a mounting hole 17 can be formed in the supporting plate 8, an avoiding groove for avoiding a fastener is formed in a position, corresponding to the mounting hole 17, of the second template 7, and the supporting plate 8 penetrates through the mounting hole 17 through the fastener to be fixedly connected with a lower hot plate of the vulcanizing machine.

The two inclined guide posts can be fixed on the supporting plate 8, and are symmetrically arranged, namely a first inclined guide post 121 and a second inclined guide post 122. The first angle guide 121 penetrates through the second mold plate 7 and the first slider 51, and is disposed to be inclined with respect to a central axis of the through hole. The second tilt guide post 122 is inserted through the second die plate 7 and the second slider 52, and is disposed to be tilted with respect to the center axis through which the second tilt guide post passes, and the first tilt guide post 121 are disposed to be symmetrical with respect to the center axis of the through hole. The first inclined guide post 121 and the second inclined guide post 122 may be "V" shaped or inverted "V" shaped. The supporting plate 8 is raised or lowered relative to the second template 7, so that the first and second inclined guide posts 121 and 122 move the first and second sliders 51 and 52 to slide in the opposite direction or in the opposite direction.

In one example, the first and second diagonal guide posts 121 and 122 are in a "V" shape, the second template 7 is raised relative to the support plate 8, the first and second sliders 51 and 52 slide in a direction away from each other, i.e., back-to-back sliding, the second template 7 is lowered relative to the support plate 8, and the first and second sliders 51 and 52 slide in a direction closer to each other, i.e., opposite to each other.

In another example, the first and second diagonal guide posts 121 and 122 are in an inverted "V" shape, the second template 7 is raised relative to the pallet 8, the first and second sliders 51 and 52 slide toward each other, i.e., slide toward each other, the second template 7 is lowered relative to the pallet 8, and the first and second sliders 51 and 52 slide away from each other, i.e., slide away from each other.

The second template 7 is lifted or lowered relative to the pallet 8, the pallet 8 may be stationary, and the second template 7 is lifted or lowered; it is also possible that the second template 7 is stationary and the pallet 8 is raised or lowered.

Supporting plates 16 can be arranged on two opposite sides of the second formwork 7, and a telescopic rod of a jacking mechanism of the vulcanizing machine pushes against the supporting plates 16 to drive the second formwork 7 to ascend and descend.

As shown in fig. 2, 4A and 4B, the first and second oblique guide posts 121 and 122 are in a V-shaped structure. In the initial state, the pallet 8 is fixed to a lower hot plate of a vulcanizer, a lift mechanism of the vulcanizer lifts the second mold plate 7 with respect to the pallet 8, and the first slide block 51 and the second slide block 52 are in a split state.

The mold closing process of the forming mold is as follows: the jacking mechanism of the vulcanizing machine descends to drive the second template 7 and the first slider 51 and the second slider 52 thereon to descend along the two V-shaped first inclined guide posts 121 and the second inclined guide posts 122 respectively, the two first inclined guide posts 121 and the second inclined guide posts 122 respectively stir the first slider 51 and the second slider 52 to move oppositely, namely to approach each other, when the second template 7 moves to contact with the supporting plate 8, the first slider 51 and the second slider 52 are combined to form a complete through hole, then the first template 4 moves to an opening of the through hole pressed in the forming body 5 along with the upper hot plate on the vulcanizing machine close to the forming body 5, so that the through hole, the first template 4 and the second template 7 together form a cavity, and the die assembly operation is completed.

Next, the molten rubber liquid is injected into the injection port, the entire cavity is filled, pressure is maintained by the upper and lower hot plates, cooling is performed, and the cooled rubber liquid is bonded to the frame to mold the rubber body 200.

The demolding process of the molding die 100 is as follows: first, the first die plate 4 is separated from the molded body 5 (the first slider 51 and the second slider 52) following the upper hot plate, and the first die release is completed; then, the second template 7 and the forming body 5 move and are pulled out along the horizontal direction along with the lower hot plate, then, a jacking mechanism of the vulcanizing machine jacks up the second template 7 relative to the supporting plate 8, so that the second template 7 is separated from the supporting plate 8, and secondary demolding is finished; then, the first slider 51 and the second slider 52 respectively ascend along the two V-shaped first and second inclined guide posts 121 and 122, and the two first and second inclined guide posts 121 and 122 respectively poke the first slider 51 and the second slider 52 to move back, i.e. away from each other, so that the first slider 51 and the second slider 51 are separated and separated from the rubber, and the third demolding is completed. The second demolding and the third demolding are performed simultaneously, that is, the first slider 51 and the second slider 52 are separated from the rubber part while the second template 7 is jacked up and separated from the second template 8, so that the demolding efficiency can be greatly improved.

It should be noted that the first and second sliders 51 and 52 slide toward or away from each other, and are not limited to the toggle driving of the angle beam 12 in an integrated or separated manner, but may be driven by a horizontal telescopic mechanism, such as an air cylinder or a hydraulic cylinder, in other embodiments. The linear driving mechanism can also be used for driving, for example, a motor is matched with a lead screw and nut pair, so that the rotary motion of the motor is converted into the horizontal movement of the nut, and the first sliding block 51 and/or the second sliding block 52 are/is driven to slide. The first slider 51 and/or the second slider 52 can also be driven to slide by electromagnetic driving and by powering on and off the magnet.

In some embodiments, as shown in fig. 4A, the two sides of the first slider 51 and/or the two sides of the second slider 52 are respectively provided with a guide 53, the guide 53 extends along the sliding direction of the first slider 51 and the second slider 52, and the first slider 51 and/or the second slider 52 respectively slide along the guide 553. The guide blocks 53 may be provided only on both sides of the first slider 51; guides may be provided only on both sides of the second slider 52; it is also possible to provide guides 53 on both sides of the first slider 51 and both sides of the second slider 52. The guide 53 guides the first slider 51 and/or the second slider 52, so that the first slider 51 and the second slider 52 move oppositely or move back to back more stably, and the first slider 51 and the second slider 52 are prevented from being separated from the second template 7.

In one example, the guide 53 may be a guide block including a side plate and a top plate, the side plate being engaged with a side edge of the first slider 51 and/or the second slider 52 to guide in the sliding direction (horizontal direction). The top plate is pressed on the edge of the top surface of the first sliding block 51 and/or the second sliding block 52, and plays a role in limiting in the vertical direction, so that the first sliding block 51 and/or the second sliding block 52 are prevented from being separated from the second template.

But not limited thereto, the guide 53 may also be a slide rail provided on the second template 7, along which the first slider 51 and/or the second slider 52 slide toward or away from each other in the sliding direction.

In some embodiments, the first template 4 extends with a locking sleeve 6 towards the second template 7, the inner surface of the locking sleeve 6 is matched with the outer surface of the forming body 5, and the forming body 5 is positioned in the locking sleeve 6 in the state that the forming body 5 is combined.

The outer surface of the first slide block 51 and the outer surface of the second slide block 52 form a first inclined surface, correspondingly, the inner surface of the locking sleeve 6 forms a second inclined surface matched with the first inclined surface, and in the process that the first slide block 51 and the second slide block 52 slide close to each other, the first inclined surface formed on the outer surface of the first slide block 51 and the outer surface of the second slide block 52 are in sliding fit with the second inclined surface formed on the inner surface of the locking sleeve 6, so that the first slide block 51 and the second slide block 52 are limited, the die assembly of the forming body 5 and the first die plate 4 is tighter, and the forming quality can be improved.

Furthermore, a limiting groove is formed in the surface, facing the first template 4, of the second template 7, and the free end portion of the locking sleeve 6 can be embedded into the limiting groove. The limiting groove can be annular and is arranged at the position, corresponding to the locking sleeve 6, of the second template 7. The free end part of the locking sleeve 6, namely the edge part of the locking sleeve 6 close to the second template 7, is just embedded into the limiting groove, so that the first template 4 and the second template 7 are respectively pressed on the upper end and the lower end of the forming body 5, and the connection is tighter and more reliable.

In some embodiments, the second template 7 is provided with positioning holes 10, and the support plate 8 is provided with positioning pins 11 corresponding to the positioning holes, the positioning pins 11 being capable of extending into the positioning holes 10. In the die assembly process, the positioning hole 10 is matched with the positioning pin 11, so that the positioning operation is convenient, and the die assembly is more accurate and convenient.

In another example, the second die plate 7 is provided with positioning pins 11, the pallet 8 is provided with positioning holes 10 corresponding to the positioning pins 11, and the positioning pins 11 can be inserted into the positioning holes 10. In other words, the second mold plate 7 and the supporting plate 8 can be limited by the positioning pin 11 and the positioning hole 10, and the positions of the positioning pin 11 and the positioning hole 10 can be interchanged.

In some embodiments, the second formwork 7 is provided with a latch 14, the supporting plate 8 is provided with a latch 13, and the latch 13 cooperates with the latch 14 to lock the supporting plate 8 and the second formwork 4 together, so as to facilitate the hoisting operation.

In another example, a latch 13 is provided on the second formwork 7, and a latch 14 is provided on the supporting plate 8, and the latch 13 cooperates with the latch 14 to lock the supporting plate 8 and the second formwork 4 together for the hoisting operation. In other words, the second template 7 and the supporting plate 8 can be locked by the locking hook 13 and the locking catch 14, and the arrangement positions of the locking hook 13 and the locking catch 14 can be interchanged with each other.

According to an embodiment of the present invention, there is also provided a vulcanizing machine including the forming mold mentioned in any one of the above embodiments.

In some embodiments, the curing press includes a frame, an upper hot plate and a lower hot plate disposed on the frame. The upper platen can be relatively close to or far from the lower platen. The upper hot plate can lift along the guide post. The lower heat plate is movable in a horizontal direction. Wherein, the first template 4 of the forming die is arranged on the upper hot plate and ascends and descends along with the upper hot plate. The second platen 7 of the molding die is provided on the lower hot plate and moves in the horizontal direction following the lower hot plate.

The upper mold plate 4 can be connected as a fixed mold plate to an upper hot plate on a vulcanizer and can be lifted up and down to be close to or away from the molded body 5 following the upper hot plate. The lower template 7 can be used as a movable template to be connected with a lower hot plate on a vulcanizing machine and moves along the horizontal direction along with the lower hot plate. In use, the shaped body 5 is positioned on the second template 7, and the framework can be placed on the supporting part in the through hole of the shaped body 5 and fixed. Then, the molding die 100 is clamped, specifically, the first template 4 moves close to the molded body 5 following the upper hot plate on the vulcanizer to the opening of the through hole press-fitted to the molded body 5, so that the through hole, the first template 4 and the second template 7 together form a cavity, and the clamping operation is completed. Next, the molten rubber liquid is injected into the injection port, the entire cavity is filled, pressure is maintained by the upper and lower hot plates, cooling is performed, and the cooled rubber liquid is bonded to the frame to mold the rubber body 200. After that, the molding die 100 is released, specifically, the first die plate 4 is moved away from the molded body 5 following the upper hot plate, the second die plate 7 is moved and pulled out in the horizontal direction together with the molded body 5 following the lower hot plate, and then the molded body 5 is released from the rubber member 200, completing the release of the molding die.

According to the vulcanizing machine provided by the embodiment of the invention, the supporting part for supporting the framework is arranged in the through hole of the forming body 5, the injection raw material is filled into the cavity at one time by using the injection process and is fully combined with the framework to form the rubber part 200 with the framework, the structure is simple, and the forming cost is reduced; the injection process is adopted for one-step molding, the operation is convenient, and the production efficiency is improved.

In some embodiments, the vulcanizer further comprises a jacking mechanism for jacking the second platen 7 to disengage the second platen 7 from the pallet 8 of the injection molding mold. Supporting plates 16 can be arranged on two opposite sides of the second formwork 7, and a telescopic rod of a jacking mechanism of the vulcanizing machine pushes against the supporting plates 16 to drive the second formwork 7 to ascend and descend. The jacking mechanism may be a hydraulic cylinder.

As shown in fig. 2, 4A and 4B, as described above, the first and second oblique guide posts 121 and 122 are in a "V" shape. In the initial state, the pallet 8 is fixed to a lower hot plate of a vulcanizer, a lift mechanism of the vulcanizer lifts the second mold plate 7 with respect to the pallet 8, and the first slide block 51 and the second slide block 52 are in a split state.

The mold closing process of the forming mold is as follows: the jacking mechanism of the vulcanizing machine descends to drive the second template 7 and the first slider 51 and the second slider 52 thereon to descend along the two V-shaped first inclined guide posts 121 and the second inclined guide posts 122 respectively, the two first inclined guide posts 121 and the second inclined guide posts 122 respectively stir the first slider 51 and the second slider 52 to move oppositely, namely to approach each other, when the second template 7 moves to contact with the supporting plate 8, the first slider 51 and the second slider 52 are combined to form a complete through hole, then the first template 4 moves to an opening of the through hole pressed in the forming body 5 along with the upper hot plate on the vulcanizing machine close to the forming body 5, so that the through hole, the first template 4 and the second template 7 together form a cavity, and the die assembly operation is completed.

Next, the molten rubber liquid is injected into the injection port, the entire cavity is filled, pressure is maintained by the upper and lower hot plates, cooling is performed, and the cooled rubber liquid is bonded to the frame to mold the rubber body 200.

The demolding process of the molding die 100 is as follows: first, the first die plate 4 is separated from the molded body 5 (the first slider 51 and the second slider 52) following the upper hot plate, and the first die release is completed; then, the second template 7 and the forming body 5 move and are pulled out along the horizontal direction along with the lower hot plate, then, a jacking mechanism of the vulcanizing machine jacks up the second template 7 relative to the supporting plate 8, so that the second template 7 is separated from the supporting plate 8, and secondary demolding is finished; then, the first slider 51 and the second slider 52 respectively ascend along the two V-shaped first and second inclined guide posts 121 and 122, and the two first and second inclined guide posts 121 and 122 respectively poke the first slider 51 and the second slider 52 to move back, i.e. away from each other, so that the first slider 51 and the second slider 51 are separated and separated from the rubber, and the third demolding is completed. The second demolding and the third demolding are performed simultaneously, that is, the first slider 51 and the second slider 52 are separated from the rubber part while the second template 7 is jacked up and separated from the second template 8, so that the demolding efficiency can be greatly improved.

As an example, when the vulcanizing machine is used specifically, the product structure is realized through the original mechanical structure of the vulcanizing machine without adding a mechanism device. The fixed die (the first template 4) fixes an upper bracket (an upper hot plate) of the machine table by using bolts; the inclined guide post fixing plate (supporting plate 8) is fixed to a machine table sliding plate (lower hot plate) by bolts; the movable mould plate (second mould plate 7) is jacked up by a machine reset lower supporting plate (jacking mechanism) and separates the slide blocks (a first slide block 51 and a second slide block 52) by using the inclined guide posts, and the slide blocks are closed by using the inclined guide posts when the reset lower supporting plate is put down.

The movable mold is jacked up by a machine reset lower support plate, the slide blocks are separated by using the inclined guide columns, the required film wrapping second framework 3 is placed into the cavity of the movable mold, the inclined guide columns are used for folding the slide blocks when the reset lower support plate is put down, the rubber material is put in the middle of the slide blocks, the required film wrapping first framework is placed into the cavity of the half block (the first slide block 51 and the second slide block 52), the lower hot slide plate rises to be folded with the fixed mold, and injection is directly carried out through a pouring gate; in order to solve the problems of injection amount and product performance, a feeding process is added in the half inner cavity. The mold is simple in design, the production efficiency is improved, the processing cost is reduced, and the operation is convenient; the appearance of the product is beautiful, the integral grade is improved, and the novel field of the vulcanization technology is broken through.

According to an embodiment of the present invention, there is further provided a rubber member molding method 300 applied to the molding die of any of the above embodiments, the rubber member molding method includes step S11, step S12, step S13 and step S14.

In step S11, the skeleton is placed on the support portion of the molding die. The skeleton is supported in the through hole of the molded body by the support portion.

In step S12, the molding die is closed. And respectively pressing the first template 4 and the second template 7 on the upper opening and the lower opening of the through hole of the forming body, so that the through hole, the first template 4 and the second template 7 form a cavity.

In step S13, a rubber material is injected into the chamber. As mentioned above, in one example, the first mold plate 4 may be provided with an injection port 15 communicating with the cavity, and the molten injection rubber raw material is filled into the cavity from top to bottom through the injection port of the first mold plate 4. In another example, an injection port communicating with the cavity may be opened in the second mold plate 4, and the molten injection rubber raw material fills the cavity from bottom to top through the injection port of the second mold plate 4. Wherein, the cavity is filled from top to bottom by the injection raw materials, the filling is quicker by the self gravity of the injection raw materials, and the molding efficiency is improved. The injection raw materials fill the cavity from bottom to top, the flow rate is slow, the filling is more uniform and full, and the performance of the molded rubber piece is more stable. The injection port 15, which may also be referred to as a gate, may be located at a middle position and formed in a bell mouth shape with a small top and a large bottom, so that feeding is faster, more efficient, and feeding is also balanced.

In step S14, the molding die is demolded. The rubber raw material in the cavity is pressure-maintained by the upper hot plate and the lower hot plate, and then is cooled, and the cooled rubber liquid is combined with the framework to form the rubber body 200. After that, the molding die is released, specifically, the first die plate 4 is moved away from the molded body 5 following the upper hot plate, the second die plate 7 is moved and pulled out in the horizontal direction together with the molded body 5 following the lower hot plate, and then the molded body 5 is released from the rubber member 200, completing the releasing of the molding die.

In some embodiments, the support portion includes a first support portion provided on the second form 7 and a second support portion provided at the periphery of the through-hole of the molding body 5.

Step S11 includes: the lower frame 3 is placed on the first support portion, and the upper frame 2 is placed on the second support portion. The lower frame 3 may be first placed in the receiving groove of the second mold 7 and then the upper frame 4 may be placed on the upper edge step of the through hole of the molding body 5. Then, the molded body 5 and the second platen 7 are moved to below the first platen 4 following the lower hot plate, and the first platen 4 is pressed to the through hole opening of the molded body 5 following the lower hot plate, thereby completing mold clamping. Then, injection, pressure maintaining, cooling and demolding are performed.

In some embodiments, the method of forming a rubber member 300 further comprises: a lower rubber sheet is placed between the lower framework 3 and the first supporting part; and/or an upper rubber sheet is placed between the upper framework 2 and the upper template 4.

Before the forming mold is closed, a lower rubber sheet may be disposed between the receiving groove of the second template 7 and the lower frame 3. The accommodating groove of lower skeleton 3 and second template 7 probably produces the deformation because factors such as machining error, being heated, atress, leads to lower skeleton 3 and the relative surperficial unevenness of accommodating groove, and the gap between the two is inconsistent, has compensatied the gap between lower skeleton 3 and the accommodating groove through lower sheet rubber, and on the one hand, lower skeleton 3 can be abundant through lower sheet rubber and the contact of accommodating groove to form effectual support to lower skeleton 3. On the other hand, the lower rubber sheet at high temperature is integrated with the molten rubber liquid injected into the cavity, the formed rubber body 1 completely wraps the lower framework 3, the bottom surface of the formed rubber part 200 is more flat, and the forming precision of the rubber part 200 is improved.

Similarly, an upper rubber sheet is provided between the first form 4 and the upper frame 2. Compensate through last film blanket 3 surface unevenness lead to go up the skeleton 3 and the gap between the first template 4, on the one hand, go up skeleton 2 through last film blanket can be abundant contact with first template 4. On the other hand, the upper rubber sheet at high temperature is integrated with the molten rubber liquid injected into the cavity, the upper framework 3 is completely wrapped in the formed rubber body 1, the top surface of the formed rubber part 200 is smoother, and the forming precision of the rubber part 200 is improved.

A lower rubber sheet may be provided between the receiving groove of the second form 7 and the lower frame 3, and an upper rubber sheet may be provided between the first form 4 and the upper frame 2. The lower rubber sheet may be provided only between the receiving groove of the second form 7 and the lower frame 3. Or an upper rubber sheet is arranged between the first template 4 and the upper framework 2.

In some embodiments, the forming mold includes a first slider 51, a second slider 52, and the oblique guide post 12;

step S12 includes:

the second template ascends or descends relative to the inclined guide post, so that the inclined guide post pulls the first slide block and the second slide block to slide oppositely and combine with each other;

step S14 includes: the second die plate 7 is lowered or raised relative to the angle post 12, and the angle post is separated by pushing the first slider 51 and the second slider 52 to slide back.

As mentioned above, the diagonal guide post may be "V" shaped or inverted "V" shaped. The supporting plate 8 is raised or lowered relative to the second template 7, so that the first and second inclined guide posts 121 and 122 move the first and second sliders 51 and 52 to slide in the opposite direction or in the opposite direction.

In one example, the first and second diagonal guide posts 121 and 122 are V-shaped, the second die plate 7 is raised relative to the pallet 8, and the first and second sliders 51 and 52 slide in a direction away from each other, i.e., back to back, so that the molded body 5 is separated. The second platen 7 is lowered relative to the pallet 8, and the first slider 51 and the second slider 52 slide in a direction to approach each other, that is, slide toward each other, so that the molded bodies 5 are united.

In another example, the first and second diagonal guides 121 and 122 are inverted "V" shaped, the second die plate 7 is raised relative to the pallet 8, the first and second sliders 51 and 52 slide toward each other, i.e., slide toward each other, to combine the molded bodies, the second die plate 7 is lowered relative to the pallet 8, and the first and second sliders 51 and 52 slide away from each other, i.e., slide back to each other, to separate the molded bodies 5.

Wherein, the second template 7 is raised or lowered relative to the pallet 8, the pallet 8 can be fixed, and the second template 7 is raised or lowered; it is also possible that the second template 7 is stationary and the pallet 8 is raised or lowered.

The term "plurality" as used herein means two or more, and other terms are analogous. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. The singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In the above description, the terms "first", "second", and the like are used to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish one type of information from another and do not denote a particular order or importance. Indeed, the terms "first," "second," and the like are fully interchangeable. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention.

In the above description, the terms "center", "longitudinal", "lateral", "front", "rear", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present embodiment and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and be operated.

In the above description, unless otherwise specified, "connected" includes a direct connection between the two without any other member, and also includes an indirect connection between the two with any other element.

It should be apparent that the foregoing description and illustrations are by way of example only and are not intended to limit the present disclosure, application or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention will include any embodiments falling within the foregoing description and the appended claims.

Claims (17)

1. A molding die for molding a rubber member having a skeleton, comprising:

a first template;

the second template is arranged below the first template;

the forming body is arranged between the first template and the second template and is provided with a through hole which is communicated up and down;

the supporting part is positioned in the through hole and used for supporting the framework;

when the forming mold is in a mold closing state, the through hole, the first template and the second template form a cavity, and the cavity is used for filling injection raw materials to form the rubber piece; and under the demolding state of the forming mold, the forming body is separated from the rubber piece.

2. The molding die according to claim 1,

the support part comprises a first support part and a second support part,

the first supporting part is a containing groove which is arranged on the surface, facing the first template, of the second template, and the containing groove is used for supporting a lower framework of the rubber part;

the second supporting portion is a step arranged on the through hole and close to the periphery of the first template, and the step is used for supporting an upper framework of the rubber piece.

3. The molding die according to claim 2,

a lower rubber sheet is arranged between the accommodating groove and the lower framework; and/or the presence of a gas in the gas,

an upper rubber sheet is arranged between the first template and the upper framework.

4. The molding die according to claim 1,

the inner wall of the through hole protrudes towards the radial inner side to form a protruding part.

5. The molding die according to any one of claims 1 to 4,

the forming body comprises a first sliding block and a second sliding block, the first sliding block and the second sliding block are respectively arranged on the second template in a sliding mode, and the second sliding block and the first sliding block can slide oppositely or back to back;

wherein the first slide block and the second slide block are integrated in a mold-closed state of the molding die; and under the demoulding state of the forming mould, the first sliding block and the second sliding block are separated.

6. The molding die of claim 5, further comprising:

the supporting plate is arranged below the second template;

one or more inclined guide groups which are arranged on the supporting plate, are V-shaped or inverted V-shaped, and comprise a first inclined guide column and a second inclined guide column, wherein the first inclined guide column penetrates through the second template and the first sliding block, and the second inclined guide column penetrates through the second template and the second sliding block;

the second template is lifted relative to the supporting plate, so that the first inclined guide post and the second inclined guide post stir the first sliding block and the second sliding block to slide oppositely or reversely.

7. The molding die according to claim 6,

the two sides of the first sliding block and/or the two sides of the second sliding block are respectively provided with a guide piece, the guide pieces extend along the sliding direction of the first sliding block and the second sliding block, and the first sliding block and/or the second sliding block respectively slide along the guide pieces.

8. The molding die according to claim 6,

the first template extends towards the second template to form a locking part, the inner surface of the locking part is matched with the outer surface of the forming body, and the forming body is positioned in the locking part in the state that the forming body is combined.

9. The molding die of claim 8,

a limiting groove is formed in the surface, facing the first template, of the second template;

the free end of the locking part can be embedded into the limiting groove.

10. The molding die according to claim 7,

the second template is provided with a positioning hole or a positioning pin;

the supporting plate is provided with a positioning pin or a positioning hole; the positioning hole corresponds to the positioning pin, and the positioning pin can extend into the positioning hole.

11. The molding die according to claim 7,

the second template is provided with a lock catch or a lock hook;

the supporting plate is provided with a locking hook or a locking buckle; the supporting plate and the second template are locked and fixed by matching the lock hook and the lock catch.

12. A vulcanizer characterized by comprising:

the forming die of any one of claims 1-11;

a frame;

the upper hot plate is arranged on the frame;

the lower hot plate is arranged on the frame, wherein the upper hot plate can be relatively close to or far away from the lower hot plate;

the first template of the forming mold is arranged on the upper hot plate, and the second template of the forming mold is arranged on the lower hot plate.

13. The vulcanizer of claim 12, further comprising:

and the jacking mechanism is used for jacking the second template so as to separate the second template from the supporting plate of the forming mold.

14. A rubber member molding method applied to the molding die according to any one of claims 1 to 12, the rubber member molding method comprising:

placing a skeleton on a support portion of the molding die;

closing the forming die;

injecting rubber raw materials into the cavity;

and demolding the forming mold.

15. The rubber member molding method according to claim 14, wherein the support portion includes a first support portion provided on the second form and a second support portion provided at a periphery of the through hole of the molded body;

placing a skeleton on the support portion of the molding die includes:

placing a lower framework on the first supporting part,

placing an upper frame on the second support portion.

16. The method of claim 15, further comprising:

a lower rubber sheet is placed between the lower framework and the first supporting part; and/or the presence of a gas in the gas,

and an upper rubber sheet is arranged between the upper framework and the first template.

17. The method of claim 14, wherein the forming mold comprises a first slide block, a second slide block and a diagonal guide post;

the forming die assembly comprises:

the second template ascends or descends relative to the inclined guide post, so that the inclined guide post pulls the first slide block and the second slide block to slide oppositely and combine with each other;

the demolding of the forming mold comprises:

the second template descends or ascends relative to the inclined guide post, so that the inclined guide post stirs the first sliding block and the second sliding block to slide backwards and separate.

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