CN219114691U

CN219114691U - Middle mold moving mechanism and rubber forming machine

Info

Publication number: CN219114691U
Application number: CN202223599147.6U
Authority: CN
Inventors: 王诗海; 刘成兵; 苏永豪
Original assignee: Guangdong Yizhimi Precision Rubber And Plastic Equipment Technology Co ltd
Current assignee: Guangdong Yizhimi Precision Rubber And Plastic Equipment Technology Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-02
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a middle mold moving mechanism and a rubber forming machine, wherein the middle mold moving mechanism comprises a fixed seat, a connecting seat and a driving oil cylinder, the fixed seat is provided with a moving groove, a plurality of guide wheels are respectively arranged on the groove walls on two opposite sides of the moving groove, and a plurality of guide wheels positioned on the groove walls on the same side of the moving groove are distributed at intervals; the two side walls of the connecting seat, which are away from each other, are respectively provided with a guide groove, and a plurality of guide wheels positioned on the same side wall of the moving groove are slidably connected in one guide groove; the connecting seat is used for being connected with the middle die; the driving oil cylinder is connected with the fixed seat, and the telescopic rod of the driving oil cylinder is connected with the connecting seat; the driving oil cylinder drives the connecting seat to move in the moving groove so as to drive the middle die to extend out of the moving groove. The technical scheme of the utility model overcomes the defects that the rubber forming machine is large in appearance and inconvenient to operate because the middle mold moving mechanism occupies the installation space outside the machine body in the prior art.

Description

Middle mold moving mechanism and rubber forming machine

Technical Field

The utility model relates to the technical field of automatic rubber production equipment, in particular to a middle mold moving mechanism and a rubber forming machine.

Background

In the rubber production process, molding and vulcanization are first performed. Firstly, placing an empty mould into a rubber machine for molding and vulcanizing, and then opening the mould of the rubber machine to take the rubber product by a mechanical arm or manually.

In the prior art, the moving die structure of the rubber forming machine adopts a moving plate to move out along a rail, and a demoulding mechanism is arranged at the front end of the rail to facilitate ejection and product taking, but the rail of the moving die structure exceeds more positions of the machine body, occupies installation space outside the machine body, and leads to large appearance of the rubber forming machine and inconvenient operation.

Disclosure of Invention

The utility model mainly aims to provide a middle mold moving mechanism and a rubber forming machine, and aims to overcome the defects that the middle mold moving mechanism occupies an installation space outside a machine body in the prior art, so that the rubber forming machine is large in appearance and inconvenient to operate.

In order to achieve the above object, the present utility model provides a middle mold moving mechanism, which includes:

the fixed seat is provided with a moving groove, a plurality of guide wheels are respectively arranged on the groove walls on two opposite sides of the moving groove, and a plurality of guide wheels positioned on the groove walls on the same side of the moving groove are distributed at intervals;

the side walls of the two opposite sides of the connecting seat are respectively provided with a guide groove, and a plurality of guide wheels positioned on the same side wall of the moving groove are slidably connected in one guide groove; the connecting seat is used for being connected with the middle die; a kind of electronic device with high-pressure air-conditioning system

The driving oil cylinder is connected with the fixed seat, and the telescopic rod of the driving oil cylinder is connected with the connecting seat;

the driving oil cylinder drives the connecting seat to move in the moving groove so as to drive the middle die to extend out of the moving groove.

In one embodiment, the connector comprises:

one end of the connecting frame is connected with the telescopic rod of the driving oil cylinder, and the other end of the connecting frame, which is far away from the driving oil cylinder, is used for being connected with the middle die; and

the two first guide rails are respectively connected with two opposite sides of the connecting frame; the side of each first guide rail, which faces away from the connecting frame, is provided with the guide groove; each first guide rail is also provided with a first limiting block, and the first limiting blocks are arranged at intervals with the guide grooves;

the fixed seat is provided with a second limiting block which is arranged at intervals with the movable groove;

when the middle die is driven to the outside of the moving groove by the connecting frame, the second limiting block is abutted with the first limiting block so as to limit the position of the middle die.

In an embodiment, each first guide rail is further provided with a guide block, the guide blocks and the first limiting blocks are located on the same side of the first guide rail, the guide blocks and the first limiting blocks are arranged at intervals, and the guide blocks are used for being in contact with side groove walls of the movable grooves.

In an embodiment, the connecting frame is provided with a first connecting hole for cooperation with the middle die for pre-positioning.

In an embodiment, the connecting frame is further provided with a second connecting hole, the second connecting hole is arranged at intervals with the first connecting hole, and the second connecting hole is used for being matched and connected with a telescopic rod of the driving oil cylinder, so that the connecting seat is detachably connected with the driving oil cylinder.

In one embodiment, the fixing base includes:

the fixing strip is detachably connected with the driving oil cylinder; and

one end of each second guide rail is connected with one end of the fixing strip, and the two second guide rails and the fixing strip are enclosed to form the moving groove; the second guide rail is provided with a hanging ring and a plurality of guide wheels, the guide wheels are arranged at intervals with the hanging ring, and the hanging ring is used for being grabbed by a user.

In an embodiment, the fixing base further comprises at least one third limiting block arranged on the fixing strip, and the third limiting block and the driving oil cylinder are arranged at intervals;

when the third limiting block is abutted with the connecting seat, the middle die is completely driven into the moving groove by the driving oil cylinder.

In an embodiment, each second guide rail is further provided with at least one column hole, and the column holes are positioned at one side of the second guide rail where the hanging ring is arranged and are spaced from the hanging ring;

the middle mold moving mechanism further comprises two stand columns, one end of each stand column is connected with the main body of the forming machine, the other end of each stand column is connected with one second guide rail, and the stand columns are arranged at intervals with the hanging rings.

In an embodiment, each second guide rail is further provided with at least one guide hole, and the guide holes and the column holes are positioned on the same side of the second guide rail and are arranged at intervals with the column holes;

the middle mold moving mechanism further comprises a hydraulic oil cylinder and at least two guide rods, wherein the hydraulic oil cylinder is arranged on the main body of the forming machine, the two guide rods are connected with telescopic rods of the hydraulic oil cylinder, and the two guide rods are arranged at intervals; one end of each guide rod far away from the hydraulic oil cylinder penetrates through one guide hole, so that the hydraulic oil cylinder drives the two guide rods to drive the two second guide rails to lift.

The utility model also provides a rubber forming machine which comprises a forming machine body and the middle mold moving mechanism, wherein the middle mold moving mechanism is arranged on the forming machine body, and the driving oil cylinder and the fixing seat are both fixed on the forming machine body.

The middle mold moving mechanism comprises a fixed seat, a connecting seat and a driving oil cylinder, wherein the fixed seat is provided with a moving groove, a plurality of guide wheels are respectively arranged on the groove walls of two opposite sides of the moving groove, and a plurality of guide wheels positioned on the groove walls of the same side of the moving groove are distributed at intervals; the side walls of the two opposite sides of the connecting seat are respectively provided with a guide groove, and a plurality of guide wheels positioned on the groove wall of the same side of the moving groove are slidably connected in one guide groove; the connecting seat is used for being connected with the middle die; the driving oil cylinder is connected with the fixed seat, and the telescopic rod of the driving oil cylinder is connected with the connecting seat; the driving oil cylinder drives the connecting seat to move in the moving groove so as to drive the middle die to extend out of the moving groove; so, move well mould mechanism and fixing base cooperation sliding connection through the connecting seat, and the one end that the driving cylinder was kept away from to the connecting seat is used for being connected with well mould for well mould also accessible connecting seat supports on the fixing base when stretching out the removal groove completely outward, makes the size of fixing base need not to design the protrusion in the make-up machine body, and then overcomes prior art and moves well mould mechanism and occupy the installation space outside the make-up machine body, does benefit to and reduces rubber make-up machine appearance, is convenient for rubber make-up machine to carry out various operations.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of an embodiment of a movable mold mechanism according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the connecting base and the middle mold of the middle mold moving mechanism;

FIG. 3 is a schematic view of the structure of the connecting base of the middle mold moving mechanism of the present utility model;

FIG. 4 is a schematic view of a rubber molding machine according to the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				10	Fixing seat	21	Connecting frame
10a	Movable groove	22	First guide rail
				10b	Guide wheel		22a	First limiting block
10c	Second limiting block	22b	Guide block
				11	Fixing strip	22c	First connecting hole
11a	Third limiting block	22d	Second connecting hole
				12	Second guide rail	30	Driving oil cylinder
12a	Hanging ring		40					Upright post
				12b	Column hole		50		Hydraulic cylinder
12c	Guide hole		60					Guide rod
				20	Connecting seat	100	Forming machine main body
20a	Guide groove	1	Middle die

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a middle mold moving mechanism.

In the embodiment of the present utility model, referring to fig. 1 to 3, the middle mold moving mechanism includes a fixed seat 10, a connecting seat 20 and a driving cylinder 30, the fixed seat 10 has a moving groove 10a, two opposite side groove walls of the moving groove 10a are respectively provided with a plurality of guide wheels 10b, and a plurality of guide wheels 10b located on the same side groove wall of the moving groove 10a are arranged at intervals; the two side walls of the connecting seat 20, which are away from each other, are respectively provided with a guide groove 20a, and a plurality of guide wheels 10b positioned on the same side wall of the moving groove 10a are slidably connected in one guide groove 20a; the connecting seat 20 is used for connecting with the middle die 1; the driving oil cylinder 30 is connected with the fixed seat 10, and a telescopic rod of the driving oil cylinder 30 is connected with the connecting seat 20; the driving cylinder 30 drives the connecting seat 20 to move in the moving groove 10a, so as to drive the middle die 1 to extend out of the moving groove 10a.

Specifically, the middle mold 1 is also provided with a guide groove 20a identical to the connection seat 20, and the guide groove 20a of the middle mold 1 is in engagement communication with the guide groove 20a of the connection seat 20. The fixing seat 10 is arranged on the forming machine body of the rubber forming machine, and the end part of the fixing seat 10 is flush with the outer wall of the forming machine body and does not protrude out of the forming machine body.

When in use, the telescopic rod of the driving oil cylinder 30 extends out, the driving oil cylinder 30 drives the connecting seat 20 to move in a direction away from the connecting seat 20, and the connecting seat 20 slides in a matched manner by utilizing the guide groove 20a and a plurality of guide wheels 10b in the moving groove 10a of the fixed seat 10, so that the driving oil cylinder 30 drives the connecting seat 20 to slide smoothly relative to the fixed seat 10; the middle die 1 can be connected with the connecting seat 20 in various modes, and the middle die 1 is driven by the connecting seat 20 to synchronously move in the moving groove 10a of the fixed seat 10 in the direction away from the driving oil cylinder 30; after the middle mold 1 is completely moved out of the moving groove 10a of the fixing seat 10, the middle mold 1 can be stably suspended outside the moving groove 10a through the matched connection of the connecting seat 20 and the fixing seat 10, and a part for matched sliding connection of the middle mold 1 is not required to be arranged at a suspended position, so that the middle mold 1 is moved out by the middle mold moving mechanism, the whole middle mold moving mechanism is not protruded outside a forming machine body, the installation space of the forming machine body occupied by the middle mold moving mechanism in the prior art is overcome, the appearance of the rubber forming machine is reduced, and various operations are conveniently executed by the rubber forming machine.

The middle die moving mechanism is matched and slidingly connected with the fixed base 10 through the connecting base 20, and one end of the connecting base 20, which is far away from the driving oil cylinder 30, is used for being connected with the middle die 1, so that the middle die 1 can be supported on the fixed base 10 through the connecting base 20 when completely extending out of the moving groove 10a, the size of the fixed base 10 is not required to be designed to be protruded out of a forming machine body, the problem that the middle die moving mechanism occupies an installation space outside the forming machine body in the prior art is solved, the appearance of a rubber forming machine is reduced, and various operations are conveniently carried out by the rubber forming machine.

In an embodiment, referring to fig. 1 to 3, the connection base 20 includes a connection frame 21 and two first guide rails 22, one end of the connection frame 21 is connected with a telescopic rod of the driving oil cylinder 30, and the other end of the connection frame 21, which is far away from the driving oil cylinder 30, is used for being connected with the middle mold 1; the two first guide rails 22 are respectively connected with the two opposite sides of the connecting frame 21; a guide groove 20a is arranged on one side of each first guide rail 22 facing away from the connecting frame 21; each first guide rail 22 is also provided with a first limiting block 22a, and the first limiting blocks 22a are arranged at intervals with the guide grooves 20a; the fixed seat 10 is provided with a second limiting block 10c, and the second limiting block 10c is arranged at intervals with the moving groove 10a; when the middle mold 1 is driven to the outside of the moving groove 10a by the connecting frame 21, the second limiting block 10c abuts against the first limiting block 22a to limit the position of the middle mold 1.

Specifically, the two first guide rails 22 are symmetrically arranged on both sides of the connecting frame 21; a first limiting block 22a is arranged on each of the two first guide rails 22, and the first limiting block 22a is positioned at one end of the first guide rail 22 and is adjacent to the driving oil cylinder 30; the fixed seat 10 is correspondingly provided with a second limiting block 10c, and the second limiting block 10c is positioned on the top surface of the fixed seat 10 and at one end of the fixed seat 10 far away from the driving oil cylinder 30; in this way, when the middle mold 1 is driven to the outside of the moving groove 10a by the connecting frame 21, until the second limiting block 10c abuts against the first limiting block 22a, that is, the second limiting block 10c limits the position of the first limiting block 22a, so that the connecting frame 21 cannot move to the outside of the moving groove 10a, the connecting frame 21 is limited to move only in the moving groove 10a, the middle mold 1 is ensured to be always limited on the fixed seat 10 by the connecting frame 21, and the middle mold cannot be completely separated from the fixed seat 10, and normal operation of the middle mold moving mechanism is ensured.

The connecting frame 21 comprises a front connecting plate, a middle connecting plate and a rear connecting plate which are sequentially connected, wherein the front connecting plate and the rear connecting plate are arranged in parallel, and the middle connecting plate is arranged vertically to the front connecting plate and the rear connecting plate. The front connecting plate is detachably connected with the middle die 1, and the rear connecting plate is detachably connected with a telescopic rod of the driving oil cylinder 30.

In an embodiment, referring to fig. 1 to 3, each first guide rail 22 is further provided with a guide block 22b, the guide block 22b and the first limiting block 22a are located on the same side of the first guide rail 22, the guide block 22b is spaced from the first limiting block 22a, and the guide block 22b is used for contacting with a side groove wall of the moving groove 10a.

Specifically, the guide block 22b is made of wear-resistant materials, so that the wear resistance is better; by arranging the guide block 22b on the first guide rail 22, the guide block 22b is in friction contact with the side groove wall of the moving groove 10a, so that the first guide rail 22 is in friction guiding during moving, and the guide groove 20a of the first guide rail 22 of the connecting seat 20 is more stable when being matched with the guide wheel 10b of the fixed seat 10 to slide, so that the connecting seat 20 and the fixed seat 10 are matched to move more smoothly.

The shape of the guide block 22b may be designed according to practical use requirements, and is not particularly limited herein.

In an embodiment, referring to fig. 1 to 3, the connection frame 21 is provided with a first connection hole 22c, and the first connection hole 22c is used for being matched with the middle mold 1 for predetermined positioning.

Specifically, a limiting post is disposed on a side of the middle die 1 facing the connecting frame 21, and the limiting post is inserted into the first connecting hole 22c, so that the middle die 1 can be in a predefined position with the connecting frame 21, and the middle die 1 can be conveniently and detachably connected with the connecting frame 21.

In the embodiment, the connecting frame 21 and the middle die 1 are penetrated through by screws so as to realize the detachable connection of the connecting frame 21 and the middle die 1; in other embodiments, the connection frame 21 and the middle mold 1 may be detachably connected by a snap connection, a magnetic connection, or the like.

In an embodiment, referring to fig. 1 to 3, the connecting frame 21 is further provided with a second connecting hole 22d, the second connecting hole 22d is spaced from the first connecting hole 22c, and the second connecting hole 22d is used for being cooperatively connected with the telescopic rod of the driving oil cylinder 30, so that the connecting seat 20 is detachably connected with the driving oil cylinder 30.

Specifically, the telescopic rod of the driving oil cylinder 30 is inserted into the second connecting hole 22d, and then is fixed on the telescopic rod of the driving oil cylinder 30 by bolts, so as to realize the connection of the driving oil cylinder 30 and the connecting frame 21.

The second connection hole 22d is formed in a rectangular hole shape so that the connection frame 21 can be connected with the driving cylinders 30 of different sizes.

In an embodiment, referring to fig. 1 to 3, the fixing base 10 includes a fixing bar 11 and two second guide rails 12, and the fixing bar 11 is detachably connected with the driving cylinder 30; one end of each second guide rail 12 is connected with one end of the fixed strip 11, and the two second guide rails 12 and the fixed strip 11 are enclosed to form a moving groove 10a; the second guide rail 12 is provided with a hanging ring 12a and a plurality of guide wheels 10b, the plurality of guide wheels 10b are arranged at intervals from the hanging ring 12a, and the hanging ring 12a is used for grabbing and carrying by a user.

Specifically, the two second guide rails 12 are connected with the fixing strip 11, so that the two second guide rails 12 have greater structural strength; each second guide rail 12 is provided with a plurality of guide wheels 10b, so that the fixed seat 10 is in sliding connection with the connecting seat 20; and the second guide rail 12 is provided with a hanging ring 12a, so that a user can conveniently transplant the fixing seat 10 by using equipment through the hanging ring 12a in view of the fact that the weight of the fixing seat 10 is large.

In an embodiment, referring to fig. 1 to 3, the fixing base 10 further includes at least one third limiting block 11a disposed on the fixing strip 11, where the third limiting block 11a is spaced from the driving cylinder 30; when the third limiting block 11a abuts against the connecting seat 20, the middle mold 1 is completely driven into the moving groove 10a by the driving oil cylinder 30. So set up, after the telescopic link of actuating cylinder 30 is retracted, actuating cylinder 30 drives link 21 and well mould 1 and resets completely to the removal inslot 10a of fixing base 10, utilizes third stopper 11a and connecting seat 20 butt this moment, makes link 21 be difficult to with actuating cylinder 30's cylinder body collision on the one hand, plays the effect of protecting actuating cylinder 30, on the other hand can inject the movable range of link 21 and well mould 1, realizes well mould 1 accurate displacement.

In an embodiment, referring to fig. 1 to 4, each second rail 12 is further provided with at least one pillar hole 12b, and the pillar hole 12b is located at a side of the second rail 12 where the hanging ring 12a is located, and is spaced from the hanging ring 12 a; the middle mold moving mechanism further comprises two upright posts 40, one end of each upright post 40 is used for being connected with the main body 100 of the forming machine, the other end of each upright post 40 is connected with a second guide rail 12, and the upright posts 40 are arranged at intervals from the hanging ring 12 a. So set up, through passing two stands 40 respectively through the post hole 12b of two second guide rails 12, be connected with make-up machine main part 100 again for fixing base 10's structural strength is bigger, and is connected more closely with make-up machine main part 100 cooperation.

In an embodiment, referring to fig. 1 to 4, each second rail 12 is further provided with at least one guide hole 12c, and the guide holes 12c and the column holes 12b are located on the same side of the second rail 12 and are spaced apart from the column holes 12 b; the middle mold moving mechanism further comprises a hydraulic oil cylinder 50 and at least two guide rods 60, wherein the hydraulic oil cylinder 50 is used for being installed on a forming machine main body 100, the two guide rods 60 are connected with telescopic rods of the hydraulic oil cylinder 50, and the two guide rods 60 are arranged at intervals; one end of each guide rod 60, which is far away from the hydraulic cylinder 50, is penetrated at a guide hole 12c, so that the hydraulic cylinder 50 drives the two guide rods 60 to drive the two second guide rails 12 to lift.

Specifically, the second guide rail 12 is provided with the guide hole 12c to be matched with the guide rods 60, the hydraulic oil cylinder 50 is utilized to drive the two guide rods 60 to lift, so that the two guide rods 60 drive the two second guide rails 12 to lift again, the whole middle mold moving mechanism is lifted relative to the body of the forming machine, the position of the middle mold moving mechanism in the vertical direction can be changed,

the utility model also provides a rubber forming machine, referring to fig. 1 and 4, the rubber forming machine comprises a forming machine main body 100 and the middle mold moving mechanism, the middle mold moving mechanism is arranged on the forming machine main body 100, the driving oil cylinder 30 and the fixing seat 10 are both fixed on the forming machine main body 100, and the specific structure of the middle mold moving mechanism refers to the embodiment.

Specifically, the molding machine main body 100 comprises a film combining mechanism, an injection plasticizing mechanism, a hydraulic mechanism, an electric control mechanism and a hot plate mechanism, wherein a middle mold moving mechanism is arranged in the injection plasticizing mechanism and is used for pushing out an injection molded product through the middle mold moving mechanism so as to realize product blanking; when no product needs to be pushed out, the connecting seat 20 of the middle mold moving mechanism drives the middle mold 1 to reset into the injection plasticizing mechanism, so that the whole rubber molding machine is complete in appearance, no part protrudes, the volume of the rubber molding machine is reduced, and the rubber molding machine is more convenient to transport and operate.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A movable die mechanism, characterized in that the movable die mechanism comprises:

2. The movable die assembly mechanism of claim 1, wherein said connector comprises:

3. The middle mold moving mechanism according to claim 2, wherein each first guide rail is further provided with a guide block, the guide block and the first limiting block are located on the same side of the first guide rail, the guide block and the first limiting block are arranged at intervals, and the guide block is used for being in contact with the side groove wall of the moving groove.

4. The movable die mechanism of claim 2, wherein the connector frame has a first connector hole for mating with a predetermined location of the die.

5. The middle mold moving mechanism of claim 4, wherein the connecting frame is further provided with a second connecting hole, the second connecting hole is arranged at a distance from the first connecting hole, and the second connecting hole is used for being matched and connected with a telescopic rod of the driving oil cylinder so as to enable the connecting seat to be detachably connected with the driving oil cylinder.

6. The movable die assembly mechanism of claim 1, wherein said mounting block comprises:

the fixing strip is detachably connected with the driving oil cylinder; and

7. The middle mold moving mechanism of claim 6, wherein the fixed seat further comprises at least one third limiting block arranged on the fixed bar, and the third limiting block is arranged at intervals with the driving oil cylinder;

8. The middle mold moving mechanism according to claim 6, wherein each of said second guide rails is further provided with at least one column hole, said column hole being located on a side of said second guide rail on which said hanging ring is provided and being spaced apart from said hanging ring;

9. The middle mold moving mechanism according to claim 8, wherein each of said second guide rails is further provided with at least one guide hole, said guide hole being located on the same side of said second guide rail as said post hole and being spaced apart from said post hole;

10. A rubber molding machine, characterized in that the rubber molding machine comprises a molding machine body and the middle mold moving mechanism according to any one of claims 1 to 9, wherein the middle mold moving mechanism is arranged on the molding machine body, and the driving oil cylinder and the fixing seat are both fixed on the molding machine body.