A middle mold plate demolding and feeding tool for a multilayer board rubber mold

Abstract

The present application relates to the technical field of mould, in particular to a middle mould plate demoulding and feeding tool for multilayer plate rubber mould, which is characterized in that two replaceable middle mould plates are arranged, a double-station operation structure is formed through the main track, the first sub-track and the second sub-track of the tool, when one middle mould plate is demoulded and performs the operation of blowing the edge after the mould is opened, the other spare middle mould plate can complete the feeding process of the workpiece to be processed at the same time, the forming process and the feeding process are synchronized and parallel, the production efficiency is greatly improved, the rolling element is arranged on both sides of the middle mould plate, the special track structure of the track body is matched, the middle mould plate can be smoothly rolled and shifted along the track, the problems of jamming and deviation which are prone to occur in the traditional manual disassembly and assembly and the pushing and pulling of the mould plate are avoided, meanwhile, the vertical movable gap is reserved between the track top wall and the rolling element, the mould closing, the jacking of the middle mould plate and the moving operation of the middle mould plate can be adapted, the structure is prevented from being stuck and the middle mould plate is prevented from being deformed under stress, and the wear of the mould is reduced.

Description

Technical Field

[0001] This invention relates to the field of mold technology, and in particular to a tooling for demolding and feeding the middle mold plate of a multi-layer rubber mold. Background Technology

[0002] Multi-layer rubber molds are the core molds for the vulcanization and molding of rubber products. They are widely used in the large-scale production of various rubber sheets and irregularly shaped rubber parts. They are typically used in conjunction with equipment such as rubber molding presses and rubber injection molding machines to complete processes such as mold closing, vulcanization molding, mold opening, demolding, and material placement. In the existing multi-layer rubber mold production process, the middle mold plate, as the core component that supports the workpiece and works with the upper and lower mold plates to complete the molding operation, directly determines the overall production cycle time through its replacement and loading / unloading operations.

[0003] Currently, the industry mostly adopts a single-piece independent operation mode for the middle mold of multi-layer rubber molds. That is, the single middle mold is always in the mold processing station. After the workpiece is formed and the mold is opened, it needs to be taken out manually or by a single robot to complete the demolding, cleaning, and re-loading. Only after all the processes are completed can the mold be closed again for production. This operating mode has several inherent defects: First, the production process has poor continuity, with vulcanization molding, demolding, and material loading performed sequentially, resulting in long idle time for equipment and severely restricting the utilization rate of molding machines and injection molding machines, leading to low overall production efficiency. Second, the disassembly and relocation of the intermediate mold plate lacks dedicated guiding fixtures, which can easily cause mold wear, mold damage, or work-related injuries. Third, the loading, unloading, and replacement of the intermediate mold plate are highly dependent on manual operation, resulting in high labor intensity, cumbersome operations, high labor costs, and the potential for production failures due to human error, hindering the promotion of automated and standardized operations on the production line. Fourth, the existing equipment lacks a spare mold plate alternation station, making it impossible to synchronize molding and loading / unloading operations, which is difficult to adapt to the needs of large-volume, continuous rubber product production and has strong production limitations.

[0004] In summary, the existing multi-layer rubber mold template operation suffers from problems such as low production efficiency, high labor costs, poor process connection, and insufficient operational stability, and urgently needs a solution. Summary of the Invention

[0005] In order to solve the above-mentioned technical problems, the purpose of this invention is to provide a middle template demolding and feeding tooling for multi-layer board rubber molds.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A demolding and feeding fixture for a multi-layer rubber mold includes several rolling elements and two symmetrically arranged fixtures. At least one rolling element is rotatably connected to each side wall of the middle mold. Each fixture includes a track body and a mounting plate installed on the outer side wall of one end of the track body. The inner side wall of the track body is recessed with a main track, a branch, a first sub-track, and a second sub-track. The mounting plate is correspondingly arranged with the main track. One end of the main track has an inlet and outlet. One end of the first sub-track and one end of the second sub-track are connected to the other end of the main track via the branch. The first sub-track is located above the second sub-track. The middle mold can reciprocate between the main track and the first sub-track, and also between the main track and the second sub-track. When the rolling elements roll against the inner bottom wall of the main track, the inner bottom wall of the first sub-track, or the inner bottom wall of the second sub-track, there is a movable gap between the inner top wall of the main track, the inner top wall of the first sub-track, or the inner top wall of the second sub-track and the rolling element.

[0007] Furthermore, the mounting plate has a position adjustment groove.

[0008] Furthermore, the main track and the first sub-track are set in a straight line, and the second sub-track is equipped with a guide plate at the end near the fork, which is used to connect the fork and the second sub-track.

[0009] Furthermore, the other end of the first sub-track is connected to the other end of the second sub-track via an end plate.

[0010] Furthermore, the top surface of the first sub-track is recessed with a flip-over notch, which communicates with the inner cavity of the first sub-track, allowing the rolling element to pass through the flip-over notch.

[0011] Furthermore, the inner bottom wall of the main track is recessed and formed with at least one main slot, and a rolling element engages with one main slot.

[0012] Furthermore, the rolling element includes a central shaft mounted on the side wall of the middle template and a rolling sleeve rotatably mounted on the central shaft.

[0013] Furthermore, the inner bottom wall of the first sub-track and / or the inner bottom wall of the second sub-track are recessed and formed with at least one slot, and a rolling element engages with one slot.

[0014] Furthermore, the tooling also includes a stop block disposed on the top surface of the other end of the track body, the stop block being used to block the rolling element transferred from the first sub-track to the top surface of the track body.

[0015] Furthermore, the top surface of the track body is recessed with two positioning slots, which are used to engage and position the rolling parts transferred from the first sub-track to the top surface of the track body. The flipping slot is located between the two positioning slots.

[0016] The beneficial effects of this invention are as follows: This invention sets up two replaceable intermediate templates, forming a dual-station operation structure through the main track, first sub-track, and second sub-track of the tooling. This allows one intermediate template to complete demolding and deburring operations on this tooling after vulcanization molding, while the other spare intermediate template simultaneously completes the loading and unloading of the workpiece. This completely changes the traditional sequential operation mode, enabling one intermediate template to demold and deburr while the other intermediate template loads the workpiece. This achieves simultaneous and parallel molding and loading / unloading processes, greatly shortening the equipment's idle waiting time and significantly improving the performance of molding machines and injection molding machines. The machine's equipment utilization rate and overall production cycle time are greatly improved, significantly increasing production efficiency. One person can operate two or even three machines, adapting to the needs of large-scale continuous production. Rolling parts are installed on both sides of the middle template, which, together with the special track structure of the track body, allows the middle template to roll smoothly along the track, avoiding the jamming and offset problems that are easy to occur when manually disassembling and pushing the template. At the same time, a vertical movement gap is reserved between the top wall of the track and the rolling parts, which can be used for mold closing, lifting the middle template, and moving the middle template, avoiding structural jamming and template deformation under stress, while reducing mold wear and extending the mold's service life. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0018] Figure 2 This is an exploded structural diagram of Embodiment 1 of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the tooling component according to Embodiment 1 of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0021] Explanation of reference numerals in the attached figures: 1. Rolling component; 2. Tooling component; 3. Track body; 4. Mounting plate; 5. Main track; 6. Branching point; 7. First branch track; 8. Second branch track; 9. Inlet / outlet; 10. Position adjustment groove; 11. Guide plate; 12. Middle template; 13. End plate; 14. Flip notch; 15. Main slot; 16. Central shaft; 17. Rolling sleeve; 18. Branch slot; 19. Installation clearance space; 20. Stop block; 21. Positioning slot; 22. Push / pull handle. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] Example 1.

[0024] like Figures 1 to 3 As shown, the present invention provides a demolding and feeding fixture for a middle template of a multi-layer rubber mold, which includes several rolling elements 1 and two symmetrically arranged fixture parts 2. At least one rolling element 1 is rotatably connected to each side wall of the middle template 12. The fixture part 2 includes a track body 3 and a mounting plate 4 installed on the outer side wall of one end of the track body 3. The inner side wall of the track body 3 is recessed with a main track 5, a branching point 6, a first branching track 7, and a second branching track 8. The mounting plate 4 is correspondingly arranged with the main track 5. One end of the main track 5 is provided with an inlet / outlet 9. One end of the first branching track 7 and one end of the second branching track 8 are both connected via... The fork 6 is connected to the other end of the main track 5, and the first sub-track 7 is located above the second sub-track 8. The middle template 12 can reciprocate between the main track 5 and the first sub-track 7, and the middle template 12 can also reciprocate between the main track 5 and the second sub-track 8. When the rolling element 1 rolls against the inner bottom wall of the main track 5, the inner bottom wall of the first sub-track 7, or the inner bottom wall of the second sub-track 8, there is a movable gap between the inner top wall of the main track 5, the inner top wall of the first sub-track 7, or the inner top wall of the second sub-track 8 and the rolling element 1, that is, the rolling element 1 can move vertically relative to the track body 3. Preferably, the middle template 12 is rotatably connected with four rolling elements 1, and two rolling elements 1 are located on the same side of the middle template 12.

[0025] When assembled and used, the multi-layer board rubber mold is installed on equipment such as a rubber molding machine or a rubber injection machine. The multi-layer board rubber mold has two middle templates 12, which are used interchangeably. Rolling parts 1 are rotatably connected to both sides of the middle template 12. The mounting plate 4 is installed on the lifting mechanism of the molding machine or injection machine. The middle template 12 is located between two tooling parts 2. The rolling parts 1 on both sides of the middle template 12 are respectively located in the main track 5, the first sub-track 7, or the second sub-track 8 of the two tooling parts 2. When one middle template 12 is located at the main track 5, the other middle template 12 is located at the first sub-track 7 or the second sub-track 8. In actual production, one intermediate template 12 is located at the main track 5 and is in the processing and production state (use state), while the other intermediate template 12 is located at the first sub-track 7 or the second sub-track 8 and is in the loading and unloading state (standby state). When the intermediate template 12 carrying the workpiece to be processed is located between the upper and lower templates of the open multi-layer board rubber mold, the rolling element 1 is suspended in the main track 5. The equipment drives the multi-layer board rubber mold to close, so as to process and shape the workpiece on the intermediate template 12. At this time, the robot or manual can demold the shaped workpiece on the intermediate template 12 in the loading and unloading state, and remove the workpiece to be processed. When the workpiece is loaded onto the middle template 12, after the equipment drives the multi-layer board rubber mold to open, the lifting mechanism of the equipment will lift the two tooling parts 2 simultaneously until the inner bottom wall of the main track 5 of the two tooling parts 2 contacts the rolling part 1 and lifts the rolling part 1 along with the middle template 12. Then, an outward pulling force is applied to the middle template 12 (the middle template 12 carrying the shaped workpiece), so that the middle template 12 moves from the main track 5 to the first sub-track 7 or the second sub-track 8. Then, the middle template 12 carrying the workpiece to be shaped on the second sub-track 8 or the first sub-track 7 is moved back to the main track 5, so as to realize that the two middle templates 12 work alternately. When the middle template 12 in the loading / unloading state is located on the first sub-track 7, the middle template 12 carrying the formed workpiece moves from the main track 5 to the second sub-track 8, and then the middle template 12 carrying the workpiece to be processed in the first sub-track 7 is moved to the main track 5; similarly, when the middle template 12 in the loading / unloading state is located on the second sub-track 8, the middle template 12 carrying the formed workpiece moves from the main track 5 to the first sub-track 7 (i.e., the formed workpiece is discharged), and then the middle template 12 carrying the workpiece to be processed in the second sub-track 8 is moved to the main track 5 (i.e., the workpiece to be processed is fed in), so as to realize the alternating movement of the two middle templates 12.

[0026] This invention features two replaceable intermediate templates 12, forming a dual-station operation structure via the main track 5, first sub-track 7, and second sub-track 8 of the tooling component 2. This allows one intermediate template 12 to simultaneously complete demolding, cleaning, and loading of the workpiece while it is inside the mold, enabling the other spare intermediate template 12 to perform demolding, cleaning, and workpiece loading simultaneously. This completely changes the traditional sequential operation mode, allowing one intermediate template 12 to perform vulcanization molding while the other performs demolding and loading. This enables simultaneous and parallel molding and loading / unloading processes, significantly reducing equipment idle time and greatly improving the utilization rate and overall efficiency of molding and injection molding machines. The production cycle is significantly improved, greatly enhancing production efficiency and adapting to the needs of large-scale continuous production. Rolling elements 1 are rotatably installed on both sides of the middle template 12, which, together with the dedicated track structure of the track body 3, allows the middle template 12 to roll smoothly along the track, avoiding the jamming and offset problems that are prone to occur when manually disassembling and pushing the template. At the same time, a vertical movement gap is reserved between the top wall of the track and the rolling elements 1, which can be used for mold closing, lifting the middle template 12, and moving the middle template 12, avoiding structural jamming and template deformation under stress, ensuring accurate alignment of the middle template 12, effectively improving the molding quality of rubber workpieces, reducing mold wear, and extending the mold service life.

[0027] In this embodiment, the mounting plate 4 has a position adjustment groove 10, the length direction of which is perpendicular to the length direction of the track body 3. This structural design allows the tooling component 2 to be precisely positioned and finely adjusted in the transverse direction perpendicular to the track body 3 during assembly. It can be adapted to the mounting hole positions and assembly spacing errors of the lifting mechanism of different specifications of molding machines and injection molding machines, effectively solving the problems of equipment installation position deviation and tooling alignment offset, greatly improving the assembly adaptation accuracy and installation versatility of the tooling, ensuring the coaxiality and parallelism of the symmetrical tooling components 2 on both sides, and laying the structural foundation for the smooth sliding and switching of the middle template 12.

[0028] In this embodiment, the main track 5 and the first sub-track 7 are arranged in a straight line. A guide plate 11 is provided at the end of the second sub-track 8 near the bifurcation 6. The guide plate 11 is used to smoothly connect the inner cavity of the bifurcation 6 and the second sub-track 8. The straight layout of the main track 5 and the first sub-track 7 enables the linear reciprocating movement of the middle template 12, with the shortest movement path and the least resistance, ensuring the high efficiency of the main workstation switching. The guide plate 11 can fill the track drop and gap at the bifurcation 6, and play a guiding, buffering and limiting role for the rolling part 1. This avoids the rolling part 1 from getting stuck, derailing, or jerking at the bifurcation 6 when the middle template 12 switches from the main track 5 to the second sub-track 8, making the reversing movement of the middle template 12 more stable and smooth, and further improving the stability of the workstation switching.

[0029] In this embodiment, the other end of the first sub-track 7 and the other end of the second sub-track 8 are fixedly connected as an integral structure via end plate 13. End plate 13 can close and fix the ends of the two sub-tracks (first sub-track 7 and second sub-track 8) arranged vertically, effectively enhancing the overall structural integrity and strength of the track body 3, avoiding deformation, misalignment, and loosening of the ends of the first sub-track 7 and the second sub-track 8 after long-term high-frequency template relocation operations, ensuring long-term stability of the spacing and parallelism of the two tracks. At the same time, end plate 13 can not only prevent the middle template 12 from detaching from the sub-track, but also protect the ends of the tracks, preventing workshop dust, rubber debris, and other debris from entering the interior of the sub-track, preventing the accumulation of impurities from affecting the sliding of the rolling parts 1, and ensuring the long-term stable operation of the tooling.

[0030] In this embodiment, the top surface of the first sub-track 7 is recessed with a flip-over notch 14, which communicates with the inner cavity of the first sub-track 7, allowing the rolling element 1 to pass through the flip-over notch 14. The flip-over notch 14 provides operating space for the demolding and flipping fine-tuning of the middle template 12. When the middle template 12 is stopped at the standby station of the first sub-track 7, the worker or robot can move the rolling element 1 on one end of the middle template 12 out of the first sub-track 7 through the flip-over notch 14, so as to realize the flipping and lifting fine-tuning of the middle template 12, which facilitates the quick demolding of the molded workpiece and the precise loading of the workpiece to be processed. This solves the problem that the enclosed track structure makes it impossible to flip or fine-tune the middle template 12 and the loading and unloading operations are inconvenient, further optimizing the convenience of the standby station.

[0031] In this embodiment, the inner bottom wall of the main track 5 is recessed with at least one main slot 15, and a rolling element 1 engages with one main slot 15. When the middle template 12 is lifted and returned to the processing position of the main track 5 with the tooling, the rolling element 1 can be accurately engaged in the main slot 15. The limiting effect of the main slot 15 realizes the precise positioning and locking of the rolling element 1 and the middle template 12, effectively preventing the middle template 12 from slipping, shifting, or shaking during the mold closing and vulcanization process, ensuring the position accuracy of the middle template 12, ensuring the dimensional consistency and molding quality of the rubber workpiece, and avoiding mold collision and wear caused by template displacement.

[0032] In this embodiment, the rolling element 1 includes a central shaft 16 mounted on the side wall of the middle template 12 and a rolling sleeve 17 rotatably sleeved on the central shaft 16. Preferably, the rolling sleeve 17 can be a bearing, roller, etc. This split rolling element 1 has a simple structure and is easy to disassemble and maintain. The central shaft 16 serves as a fixed support and rotation reference, ensuring the stable rotation of the rolling sleeve 17. The rolling sleeve 17 uses standard wear-resistant parts such as bearings and rollers, which rotate smoothly and have excellent wear resistance. This can significantly reduce the frictional resistance of the sliding displacement of the middle template 12, reduce the wear of the track body 3 and the rolling element 1, and at the same time, the replacement cost of standard parts is low, which facilitates daily maintenance of the equipment and effectively extends the overall service life of the tooling.

[0033] In this embodiment, at least one slot 18 is recessed into the inner bottom wall of the first sub-track 7 and / or the inner bottom wall of the second sub-track 8, and a rolling element 1 engages with one slot 18. The slot 18 can limit and fix the middle template 12 that is parked at the standby station of the first sub-track 7 and the second sub-track 8, so that the middle template 12 in the standby state maintains a stable posture, avoids the template 12 from sliding or shifting randomly during loading and unloading operations, facilitates the precise completion of demolding and loading processes by manual or robotic arms, improves the stability and accuracy of standby station operations, and prevents problems such as misalignment of loading and workpiece placement caused by the shaking of the middle template 12.

[0034] In this embodiment, the mounting plate 4 has an installation clearance space 19; specifically, there are two position adjustment slots 10, and the installation clearance space 19 is located between the two position adjustment slots 10. The installation clearance space 19 can be adapted to the protruding structure, connecting parts, and limiting structure of the equipment lifting mechanism, avoiding interference and collision with the original structure of the equipment during tooling installation, and improving the compatibility of tooling assembly; at the same time, the layout of the two position adjustment slots 10 and the installation clearance space 19 makes the mounting plate 4 more evenly stressed, and the left and right symmetry is higher when adjusting the position, further improving the stability and alignment accuracy of the tooling after installation.

[0035] In this embodiment, the inlet and outlet 9 of the main track 5 are configured as a trumpet-shaped structure. The trumpet-shaped inlet and outlet 9 has a flared guiding function. When the middle template 12 enters and exits the main track 5 to complete the workstation switching, it can guide the rolling element 1, effectively avoiding the problem of the rolling element 1 hitting the port of the main track 5 or derailing and getting stuck in the track gap during the initial movement of the middle template 12. This reduces the difficulty of the middle template 12 entering and exiting the main track 5, making the middle template 12 enter and exit the main track 5 more smoothly, further improving the smoothness and stability of workstation switching, and reducing the probability of equipment failure.

[0036] Specifically, the demolding and feeding fixture for the middle template of the multi-layer rubber mold also includes a push-pull handle 22 installed on the end face of the middle template 12. The push-pull handle 22 is used by the operator or robot to push and pull the middle template 12.

[0037] Specifically, the demolding and feeding fixture for the middle template of the multi-layer rubber mold also includes a lifting demolding mechanism disposed between and below the two fixture parts 2. In practical applications, when the middle template 12 carrying the molded workpiece moves to the first sub-track 7 or the second sub-track 8 and corresponds to the lifting demolding mechanism, the lifting demolding mechanism can lift and demold the molded workpiece in the middle template 12 to achieve automated demolding.

[0038] Example 2.

[0039] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the tooling 2 also includes a stop block 20 disposed on the top surface of the other end of the track body 3. The stop block 20 is used to block the rolling element 1 that is transferred from the first sub-track 7 to the top surface of the track body 3.

[0040] During actual workstation switching operations, when the middle template 12 carrying the molded workpiece moves into the first sub-track 7, and the molded workpiece on the middle template 12 needs to be flipped before demolding, the rolling element 1 on one end of the middle template 12 moves to the position corresponding to the flipping notch 14, and then lifts one end of the middle template 12 upwards, so that the rolling element 1 on one end of the middle template 12 can move out of the first sub-track 7 from the flipping notch 14 and move to the top surface of the track body 3. At the same time, the rolling element 1 on the other end of the middle template 12 continues to make adaptive movements within the first sub-track 7 to achieve the flipping of the middle template 12. Among them, the stop block 20 blocks the rolling element 1 on the top surface of the track body 3. If there is no stop structure, the rolling element is very likely to slip over the travel and fall off the top surface of the track body 3 due to factors such as equipment lifting vibration, pushing and pulling inertia, and deviation of manual operation force, which may cause the middle template 12 to tilt, misalign, or even fall. The added stop 30 in this embodiment forms a rigid block after the rolling element 1 slides into place, precisely limiting the maximum sliding stroke of the rolling element 1 and effectively preventing over-traffic derailment during the repositioning of the middle template 12. Simultaneously, this embodiment sets the stop 20 and end plate 13 as an integrated structure. This integrated structure has no splicing gaps or assembly loosening gaps, resulting in higher structural strength and better overall stability. Compared to a split bolt assembly structure, it can withstand the inertial impact of the rolling element 1 for a long time, is less prone to loosening, deformation, or displacement, and requires less maintenance, significantly improving the structural reliability of the tooling during long-term, high-frequency operation.

[0041] In this embodiment, the top surface of the track body 3 is recessed with two positioning slots 21. The positioning slots 21 are used to engage and position the rolling element 1 transferred from the first sub-track 7 to the top surface of the track body 3. The flipping notch 14 is located between the two positioning slots 21. In practical applications, the rolling element 1 on one end of the middle template 12 moves out of the first sub-track 7 through the flipping notch 14, and the rolling element 1 rolls along the top surface of the track body 3. When the rolling element 1 moves to the corresponding positioning slot 21, the positioning slot 21 engages and positions the rolling element 1 to ensure the stability and positional accuracy of the rolling element 1, thereby ensuring the stability and positional accuracy of the middle template 12. In addition, the setting of the two positioning slots 21 can realize the movement or flipping of the middle template 12 in different directions according to actual needs.

[0042] The remaining structures in this embodiment are the same as those in Embodiment 1. The same structures are analyzed using the method described in Embodiment 1, and will not be repeated here.

[0043] All technical features in this embodiment can be freely combined according to actual needs.

[0044] The above embodiments are preferred implementations of the present invention. In addition, the present invention can be implemented in other ways. Any obvious substitutions without departing from the concept of the present technical solution are within the protection scope of the present invention.

Claims

1. A tooling for demolding and feeding the middle template of a multi-layer rubber mold, characterized in that: It includes several rolling elements (1) and two symmetrically arranged tooling parts (2). At least one rolling element (1) is rotatably connected to both sides of the middle template (12). The tooling part (2) includes a track body (3) and a mounting plate (4) installed on the outer side wall of one end of the track body (3). The inner side wall of the track body (3) is recessed with a main track (5), a branch (6), a first branch track (7) and a second branch track (8). The mounting plate (4) is arranged correspondingly to the main track (5). One end of the main track (5) is provided with an inlet and outlet (9). One end of the first branch track (7) and one end of the second branch track (8) are both connected to the branch (6). The first sub-track (7) is connected to the other end of the main track (5), and the second sub-track (8) is located above the second sub-track (8). The middle template (12) can move back and forth between the main track (5) and the first sub-track (7), and the middle template (12) can also move back and forth between the main track (5) and the second sub-track (8). When the rolling element (1) rolls against the inner bottom wall of the main track (5), the inner bottom wall of the first sub-track (7) or the inner bottom wall of the second sub-track (8), there is a movable gap between the inner top wall of the main track (5), the inner top wall of the first sub-track (7) or the inner top wall of the second sub-track (8) and the rolling element (1).

2. The tooling for demolding and feeding of the middle template in a multi-layer rubber mold according to claim 1, characterized in that: The mounting plate (4) has a position adjustment groove (10).

3. The tooling for demolding and feeding of the middle template in a multi-layer rubber mold according to claim 1, characterized in that: The main track (5) and the first sub-track (7) are arranged in a straight line. The second sub-track (8) is provided with a guide plate (11) at one end near the bifurcation (6). The guide plate (11) is used to connect the bifurcation (6) and the second sub-track (8).

4. The tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 1, characterized in that: The other end of the first sub-track (7) is connected to the other end of the second sub-track (8) via an end plate (13).

5. The tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 1, characterized in that: The top surface of the first sub-track (7) is recessed with a flip-up notch (14), which is connected to the inner cavity of the first sub-track (7), and the rolling element (1) can pass through the flip-up notch (14).

6. The tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 1, characterized in that: The inner bottom wall of the main track (5) is recessed and formed with at least one main slot (15), and a rolling element (1) is engaged with a main slot (15).

7. The tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 1, characterized in that: The rolling element (1) includes a central shaft (16) mounted on the side wall of the middle template (12) and a rolling sleeve (17) rotatably mounted on the central shaft (16).

8. The tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 1, characterized in that: The inner bottom wall of the first sub-track (7) or / and the inner bottom wall of the second sub-track (8) is recessed with at least one sub-slot (18), and a rolling element (1) engages with a sub-slot (18).

9. The tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 5, characterized in that: The tooling (2) also includes a stop (20) disposed on the top surface of the other end of the track body (3), the stop (20) being used to block the rolling element (1) transferred from the first sub-track (7) to the top surface of the track body (3).

10. A tooling for demolding and feeding the middle template of a multi-layer rubber mold according to claim 5 or 9, characterized in that: The top surface of the track body (3) is recessed with two positioning slots (21). The positioning slots (21) are used to engage and position the rolling element (1) transferred from the first sub-track (7) to the top surface of the track body (3). The flip notch (14) is located between the two positioning slots (21).

Images