Die change transition bridge and equipment

Abstract

The invention discloses a die change transition bridge and equipment. The transition bridge comprises a transition rack, a supporting assembly and a telescopic driving mechanism, wherein the supporting assembly and the telescopic driving mechanism are arranged on the transition rack; the transition rack is fixedly arranged in front of the oil press; each supporting assembly comprises a pulley and a supporting base, and the multiple pulleys are rotationally arranged on the supporting bases. The supporting seats comprise a first supporting seat and a second supporting seat, the first supporting seat is arranged on the transition rack through a sliding guide structure, and the first supporting seat is connected with the driving end of the telescopic driving mechanism; in the supporting state, the first supporting base is located between the second supporting base and the oil press to support the mold. And in a non-supporting state, the first supporting seat is contracted on one side of the second supporting seat. The transition bridge has large supporting force, is suitable for dies of various body types, can be folded and contracted, occupies small space, and does not affect normal work.

Description

Technical Field

[0001] The invention relates to a mold changing device, in particular to a mold changing transition bridge and equipment. Background Art

[0002] Existing pots are typically made of aluminum alloy or stainless steel. Stainless steel pots contain a certain amount of chromium, which forms a strong oxide film (passivation film) on the steel surface. This protects the metal from chemical reactions, resulting in excellent stability and widespread use. In the production of stainless steel pots, a round sheet of metal is first placed into a stamping die, where it is stretched into a cylindrical shape, forming the initial shape of the pot. This is followed by secondary stretching, punching, and curling to achieve the final shape of the pot.

[0003] It can be seen that multiple sets of molds are used in the production of cookware. The current mold changing method is generally to use a crane or a mold changing cart to replace the mold. The investment cost of using a crane is high and it is inconvenient to move. Therefore, the common method is to use a mold changing cart to replace the mold. For example, the invention application with application publication number CN119610767A discloses a mold changing device for a press mold. The mold changing device is provided with a mold changing trolley. The top of the mold changing trolley is provided with multiple mold changing stations. Before changing the mold, the spare supporting plate is installed on a mold changing station, and the mold body is fixed on the supporting plate with a pressing plate. Then, the machine is stopped to change the mold, which can greatly reduce the downtime and improve the efficiency of mold changing. During the mold changing process, the mold changing trolley moves horizontally until the mold to be replaced is aligned with the auxiliary support frame, and then the power mechanism drives the mold to be replaced through the auxiliary support frame to move into the press.

[0004] Furthermore, although the auxiliary support frame (also called the transition bridge) is connected to the electric telescopic rod and can be swung and folded after the mold is changed without affecting normal operation, it has the following limitations:

[0005] 1. The transition bridge is supported by an electric telescopic rod, which is not a rigid support. It is easy to shake during mold change, which may affect the docking of the mold.

[0006] 2. The electric telescopic rod is used to support the transition bridge, but the supporting strength will be limited. It is only suitable for replacing small and medium-sized molds (light weight), not for large molds, and the usage scenarios are limited. Summary of the Invention

[0007] The purpose of the present invention is to overcome the above-mentioned problems and provide a mold change transition bridge, which not only has a large supporting force and is suitable for molds of various sizes, but can also be folded and shrunk, takes up little space, and will not affect normal work.

[0008] Another object of the present invention is to provide a mold changing device.

[0009] The purpose of the present invention is achieved through the following technical solutions:

[0010] A mold change transition bridge includes a transition frame, a support assembly and a telescopic drive mechanism arranged on the transition frame;

[0011] The transition frame is fixedly arranged in front of the oil press;

[0012] The support assembly is provided with multiple groups, and each group includes a pulley and a support seat, wherein the pulley is provided in multiple groups and is rotatably arranged on the support seat; the support seat includes a first support seat and a second support seat, wherein the first support seat is arranged on the transition frame through a sliding guide structure, and the first support seat is connected to the driving end of the telescopic drive mechanism;

[0013] In the supporting state, the first supporting seat is located between the second supporting seat and the hydraulic press to support the mold; in the non-supporting state, the first supporting seat is retracted to one side of the second supporting seat.

[0014] In a preferred embodiment of the present invention, the second support base is fixedly mounted on the transition frame. In the supporting state, the first and second support bases do not overlap in a parallel projection along the driving direction of the telescopic drive mechanism. This facilitates retracting the first support base to one side of the second support base, resulting in a simple structure and quick operation.

[0015] In a preferred embodiment of the present invention, the telescopic drive mechanism includes a telescopic drive cylinder, a cylinder body of the telescopic drive cylinder is fixedly arranged on the transition frame, and a telescopic rod of the telescopic drive cylinder is connected to the first support seat.

[0016] In a preferred embodiment of the present invention, the sliding guide structure includes a slide rail and a slider, wherein the slider is fixedly mounted on the transition frame, and the slide rail is fixedly mounted on the bottom of the first support base. In this way, a guide can be provided for the extension and retraction of the first support base.

[0017] In a preferred embodiment of the present invention, a sliding avoidance assembly is provided between the second support seat and the transition frame, and the sliding avoidance assembly includes a sliding guide plate, a guide bearing and a return spring;

[0018] The sliding guide plate is fixedly mounted on the transition frame, and is provided with at least two avoidance guide grooves, each of which includes two straight sections and one inclined section, the two straight sections being located at both ends of the inclined section, and the length directions of the two straight sections being parallel to the driving direction of the telescopic drive mechanism;

[0019] The number of the guide bearings is the same as the number of the avoidance guide grooves. The guide bearings are rotatably connected to the bottom of the second support seat and are located in the avoidance guide grooves. The axes of the guide bearings extend vertically. The opening width of the avoidance guide grooves is smaller than the width of the inner cavity.

[0020] The two ends of the return spring are fixedly connected to the sliding guide plate and the second support seat respectively;

[0021] A first hook is provided at one end of the first support base away from the hydraulic press, and a second hook is provided at one end of the first support base close to the hydraulic press to cooperate with the first hook, wherein the first hook is bent downward and the second hook is bent upward;

[0022] In the supporting state, the first supporting base and the second supporting base are located on the same straight line.

[0023] Through the above structure, when the mold change is completed, the first support seat needs to be retracted: the first support seat is driven by the telescopic drive mechanism to move away from the hydraulic press, and under the action of the first hook and the second hook, the second support seat is pushed to move synchronously; at the same time, the guide bearing located at the bottom of the second support seat first moves backward along one of the straight sections, and then enters the inclined section. At this time, the second support seat is tilted along the inclined section, and the first hook and the second hook move relative to each other laterally and move away from each other, so that the second support seat gradually avoids the first support seat until the guide bearing moves to another straight section. At this time, the first support seat and the second support seat are not on the same straight line, and the second support seat has given up the position for accommodating the first support seat, so that the first support seat can be retracted to one side of the second support seat; in the above process, the reset spring is deformed and stores energy.

[0024] When the mold needs to be changed, the telescopic drive mechanism drives the first support seat to move in the direction close to the hydraulic press. When the first hook of the first support seat exceeds the end of the second support seat close to the hydraulic press, the first hook moves to one side of the second hook, and the second support seat loses its limit and obstruction, and the return spring begins to release potential energy to restore deformation, first driving the second support seat forward along the other straight section. At this time, the first support seat and the second support seat move synchronously until the guide bearing enters the inclined section. At this time, the second support seat tilts along the inclined section, and the first hook and the second hook move relative to each other laterally and approach each other until the first hook and the second hook are fully matched. At this time, the first support seat and the second support seat are located in the same straight line; the telescopic drive mechanism continues to drive the first support seat forward until the guide bearing moves to the end of one of the straight sections. At this time, the telescopic drive mechanism stops driving and maintains a locked state, thereby fixing the guide bearing and the second support seat in the current position to prevent shaking. In this way, it is equivalent to a support base supporting the mold in the same straight line. Compared with the situation where the mold is not supported in the same straight line, supporting the mold in the same straight line has the advantages of smoother transition, more stability, and less vibration.

[0025] Moreover, when the guide bearing enters the straight section, the straight section can provide a lateral limiting effect to prevent the guide bearing and the second support seat from shaking laterally. In addition, the tightening fit of the first pull hook and the second pull hook allows the second support seat to stay relatively stably with the first support seat to ensure a smooth transition of the mold.

[0026] Furthermore, an extrusion strip is provided on the side of the second support seat, and an inclined extrusion surface is provided at the end of the extrusion strip close to the hydraulic press, so as to completely squeeze the first support seat and the second support seat to one side and always keep them in a staggered avoidance state.

[0027] In a preferred embodiment of the present invention, the mold support assembly further comprises an end reinforcement support structure, the end reinforcement support structure comprising a support rod and a support frame, one end of the support rod being rotatably connected to the lower portion of the end of the first support seat close to the hydraulic press;

[0028] The support frame is a triangular structure, the first corner of the support frame is rotatably connected to the other end of the support rod, and the second corner of the support frame is rotatably connected to the mounting rod; the mounting rod is fixedly arranged on the crossbeam of the transition frame;

[0029] In the supporting state, the third corner of the supporting frame rests on the crossbeam of the transition frame.

[0030] With this structure, in the supported state, the first support base extends beyond the transition frame and is relatively long, allowing the mold to be securely delivered to the hydraulic press. The support frame rests against the crossbeam of the transition frame, reinforcing the end of the first support base, ensuring sufficient support for the mold. Furthermore, in the unsupported state, the support rod and support frame can retract with the first support base, reducing space usage.

[0031] In a preferred embodiment of the present invention, the transition frame is provided with a chain guide rail for accommodating the chain, and at least two chain guide rails are provided, and the chain guide rail closest to the hydraulic press is fixedly connected to the first support seat through a cross bar.

[0032] Furthermore, the transition frame is provided with a lifting drive cylinder, and the telescopic rod of the lifting drive cylinder is fixedly connected to one or more chain guide rails that are not closest to the hydraulic press;

[0033] In the supporting working state, all chain guides are located in the same straight line.

[0034] Through the above structure, after the mold change is completed, the rear chain guide is first driven downward by the lifting drive cylinder to avoid the retraction of the front chain guide, and then the first support seat and the front chain guide are driven to move away from the hydraulic press by the telescopic drive mechanism, so that the front chain guide is stacked on top of the rear chain guide.

[0035] Furthermore, there are three chain guide rails, and a telescopic supporting structure is provided below the middle chain guide rail. The telescopic supporting structure includes a supporting frame, a supporting spring, and a descending avoidance transmission assembly.

[0036] The top of the support bracket is fixedly connected to the chain guide rail, and the lower end of the support bracket is a columnar structure and can vertically slide through the support mounting plate, and the support mounting plate is fixedly set on the transition frame;

[0037] The supporting spring is sleeved on the lower end of the supporting bracket, and the two ends of the supporting spring are respectively pressed tightly between the top of the supporting bracket and the supporting mounting plate;

[0038] The descending avoidance transmission assembly includes a descending avoidance transmission wheel, a descending avoidance swing frame and a descending avoidance transmission seat, the descending avoidance swing frame is rotatably connected to the transition frame, one end of the descending avoidance swing frame is rotatably connected to the descending avoidance transmission wheel, and the other end of the descending avoidance swing frame is provided with an oblong hole; the axis of the descending avoidance transmission wheel extends horizontally and is perpendicular to the driving direction of the telescopic drive mechanism; the descending avoidance transmission seat is fixedly arranged on the side wall of the chain guide rail located in the middle, and the descending avoidance transmission seat is provided with a transmission part extending into the oblong hole;

[0039] A descending push bar is provided on the side wall of the chain guide rail closest to the hydraulic press. In the non-descending and contracted state, the descending avoidance transmission wheel is located on the moving path of the descending push bar.

[0040] Through the above structure, after the mold change is completed, the first support seat and the chain guide closest to the hydraulic press are driven by the telescopic drive mechanism to move away from the hydraulic press, and the descending push bar located on the side wall of the chain guide closest to the hydraulic press pushes the descending avoidance transmission wheel to swing downward, thereby driving the entire descending avoidance swing frame to swing downward, thereby pressing down the descending avoidance transmission seat, causing the middle chain guide to move downward, thereby avoiding the chain guide closest to the hydraulic press, until the descending avoidance transmission wheel is pressed under the descending push bar. At this time, the middle chain guide has given up the position of accommodating the chain guide closest to the hydraulic press, so that the chain guide closest to the hydraulic press is covered on top of the chain guide that can be retracted in the middle; in the above process, the supporting spring deforms and stores energy.

[0041] When the mold needs to be changed, the telescopic drive mechanism drives the first support seat and the chain guide closest to the hydraulic press to move toward the hydraulic press. When the descending push bar detaches from the descending avoidance transmission wheel, the middle chain guide loses its limit and obstruction, and the supporting spring begins to release potential energy to restore deformation, driving the middle chain guide to rise and reset until it is in the same straight line with other chain guides.

[0042] A mold changing device comprises a mold changing car, a push-pull mechanism and the mold changing transition bridge, wherein the mold changing car is located between the push-pull mechanism and the mold changing transition bridge, and the mold changing transition bridge is located between the mold changing car and the hydraulic press.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. The transition bridge of the present invention has a good load-bearing capacity by arranging the support seat on the transition frame, can provide relatively stable support for the mold, and is suitable for molds of various sizes.

[0045] 2. The first support base of the present invention can be retracted to one side of the second support base to reduce the space occupied by the transition bridge without affecting normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a top view of the mold changing equipment of the present invention.

[0047] Figure 2 It is a schematic diagram of the three-dimensional structure of one embodiment of the mold change transition bridge of the present invention.

[0048] Figure 3 This is a top view of one embodiment of the mold change transition bridge of the present invention.

[0049] Figure 4 for Figure 2 Magnified view of the X in .

[0050] Figure 5-Figure 6 Schematic diagram of the three-dimensional structure of two different states of another embodiment of the mold change transition bridge of the present invention.

[0051] Figure 7 This is a front view of a first hook and a second hook of another embodiment of a mold change transition bridge of the present invention.

[0052] Figure 8 A top view of a support assembly according to another embodiment of the present invention being retracted.

[0053] Figure 9 A top view of a sliding guide plate and a guide bearing of a support assembly according to another embodiment of the present invention.

[0054] Figure 10-11 It is a front view of a chain guide and a telescopic supporting structure in two different states according to another embodiment of the present invention. DETAILED DESCRIPTION

[0055] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described below in conjunction with embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0056] Example 1

[0057] Combine Figure 1 The mold changing equipment of this embodiment includes a mold changing cart 1, a push-pull mechanism 2 and a mold changing transition bridge 3. The mold changing cart 1 is located between the push-pull mechanism 2 and the mold changing transition bridge 3, and the mold changing transition bridge 3 is located between the mold changing cart 1 and the hydraulic press 4.

[0058] Combine Figure 2-Figure 3 The mold changing transition bridge includes a transition frame 5 and a support assembly and a telescopic drive mechanism arranged on the transition frame 5; the transition frame 5 is fixedly arranged in front of the hydraulic press 4; the support assembly is provided with multiple groups and each group includes a pulley 6 and a support seat, and the pulley 6 is provided in multiple groups and is rotatably arranged on the support seat; the support seat includes a first support seat 7 and a second support seat 8, and the first support seat 7 is arranged on the transition frame 5 through a sliding guide structure. The first support seat 7 is connected to the driving end of the telescopic drive mechanism; in the supporting state, the first support seat 7 is located between the second support seat 8 and the hydraulic press 4 to support the mold; in the non-supporting state, the first support seat 7 is retracted to one side of the second support seat 8.

[0059] Combine Figure 2-Figure 3 The second support base 8 is fixedly mounted on the transition frame 5. In the supporting state, in the parallel projection of the driving direction of the telescopic drive mechanism, the first support base 7 and the second support base 8 do not overlap. This makes it easy to retract the first support base 7 to one side of the second support base 8, with a simple structure and quick operation.

[0060] Combine Figure 2-Figure 3 The telescopic drive mechanism includes a telescopic drive cylinder 9, the cylinder body of the telescopic drive cylinder 9 is fixedly set on the transition frame 5, and the telescopic rod of the telescopic drive cylinder 9 is connected to the first support seat 7.

[0061] Combine Figure 2-Figure 3 The sliding guide structure includes a slide rail and a slider, the slider is fixedly arranged on the transition frame 5, and the slide rail is fixedly arranged at the bottom of the first support seat 7. In this way, a guide can be provided for the telescopic movement of the first support seat 7.

[0062] Combine Figure 2-Figure 3 The transition frame 5 is provided with a chain guide 10 for arranging the chain. There are at least two chain guides 10. The chain guide 10 closest to the hydraulic press 4 is fixedly connected to the first support seat 7 through a cross bar 11.

[0063] Furthermore, a lifting drive cylinder 12 is provided on the transition frame 5, and the telescopic rod of the lifting drive cylinder 12 is fixedly connected to one or more chain guides 10 that are not closest to the hydraulic press 4; in the supporting working state, all the chain guides 10 are located on the same straight line.

[0064] Through the above structure, after the mold change is completed, the rear chain guide 10 is first driven downward by the lifting drive cylinder 12 to avoid the front chain guide 10 from retracting, and then the first support seat 7 and the front chain guide 10 are driven by the telescopic drive mechanism to move away from the hydraulic press 4, so that the front chain guide 10 is stacked on top of the rear chain guide 10.

[0065] Combine Figure 1-Figure 3 The working principle of the mold change transition bridge of this embodiment is as follows:

[0066] Before changing the mold, the mold changing car 1 ensures that the seat corresponding to the mold to be replaced is located between the transition bridge and the push-pull mechanism 2, and the transition bridge is turned to an extended state to accommodate the mold to be replaced.

[0067] When changing the mold, first release the locking effect of the mold to be replaced, then pull the mold to be replaced outward through the push-pull mechanism 2, so that the mold to be replaced gradually moves away from the hydraulic press 4, and then transfers it to the pulley 6 of the first support seat 7 and the second support seat 8 of the transition bridge, and finally returns to the corresponding seat of the mold changing cart 1. Then the mold changing cart 1 moves, moves the mold to be replaced between the transition bridge and the push-pull mechanism 2, and then pushes the mold to be replaced toward the hydraulic press 4 through the push-pull mechanism 2, so that the mold to be replaced is transferred from the mold changing cart 1 to the pulley 6 of the second support seat 8. Then, under the action of the pulley 6 of the first support seat 7, the mold to be replaced is pushed into the hydraulic press 4, and the newly replaced mold is locked, thus completing the mold replacement operation.

[0068] Finally, the telescopic drive mechanism drives the first support seat 7 to move away from the hydraulic press 4 until the first support seat 7 is retracted to one side of the second support seat 8, so as to reduce the space occupied by the transition bridge without affecting normal operation.

[0069] Example 2

[0070] Combine Figure 5-Figure 9 , different from Example 1, a sliding avoidance component is provided between the second support seat 8 and the transition frame 5, and the sliding avoidance component includes a sliding guide plate 13, a guide bearing 14 and a return spring 15; the sliding guide plate 13 is fixedly arranged on the transition frame 5, and at least two avoidance guide grooves are opened on the sliding guide plate 13, each avoidance guide groove includes two straight sections 13-1 and an inclined section 13-2, the two straight sections 13-1 are located at the two ends of the inclined section 13-2, and the length direction of the two straight sections 13-1 is parallel to the driving direction of the telescopic drive mechanism; the number of the guide bearings 14 is the same as the number of the avoidance guide grooves, and the guide bearing 14 is rotatably connected to the bottom of the second support seat 8 and is located in the avoidance guide groove, and the axis of the guide bearing 14 extends vertically; the opening width of the avoidance guide groove is smaller than the width of the inner cavity; the two ends of the return spring 15 are respectively fixedly connected to the sliding guide plate 13 and the second support seat 8.

[0071] A first hook 16 is provided at the end of the first support seat 7 away from the hydraulic press 4, and a second hook 17 cooperating with the first hook 16 is provided at the end of the first support seat 7 close to the hydraulic press 4. The first hook 16 bends downward and the second hook 16 bends upward; in the supporting state, the first support seat 7 and the second support seat 8 are located on the same straight line.

[0072] Through the above structure, when the mold change is completed, the first support seat 7 needs to be retracted: the first support seat 7 is driven by the telescopic drive mechanism to move away from the hydraulic press 4, and under the action of the first hook 16 and the second hook 17, the second support seat 8 is pushed to move synchronously; at the same time, the guide bearing 14 at the bottom of the second support seat 8 first moves backward along one of the straight sections 13-1, and then enters the inclined section 13-2. At this time, the second support seat 8 is tilted along the inclined section 13-2. Figure 8 , the first hook 16 and the second hook 17 move relative to each other laterally and move away from each other, so that the second support seat 8 gradually avoids the first support seat 7 until the guide bearing 14 moves to another straight section 13-1. At this time, the first support seat 7 and the second support seat 8 are not on the same straight line. The second support seat 8 has given up the position for accommodating the first support seat 7, so that the first support seat 7 can be retracted to one side of the second support seat 8. Figure 6 During the above process, the return spring 15 is deformed and stores energy.

[0073] When the mold needs to be changed, the first support seat 7 is driven by the telescopic drive mechanism to move toward the direction of the hydraulic press 4. When the first hook 16 of the first support seat 7 exceeds the end of the second support seat 8 close to the hydraulic press 4, the first hook 16 moves to the side of the second hook 17, and the second support seat 8 loses its limit and blockage. The reset spring 15 begins to release potential energy to restore the deformation, first driving the second support seat 8 to move forward along the other straight section 13-1. At this time, the first support seat 7 and the second support seat 8 move synchronously until the guide bearing 14 enters the inclined section 13-2. The second support seat 8 is tilted and moved along the inclined section 13-2, and the first hook 16 and the second hook 17 are relatively moved laterally and approach each other until the first hook 16 and the second hook 17 are fully matched. At this time, the first support seat 7 and the second support seat 8 are located on the same straight line; the telescopic drive mechanism continues to drive the first support seat 7 to move forward until the guide bearing 14 moves to the end of one of the straight sections 13-1. At this time, the telescopic drive mechanism stops driving and maintains a locked state, thereby fixing the guide bearing 14 and the second support seat 8 in the current position to prevent shaking. Figure 5 In this way, it is equivalent to a support base supporting the mold in the same straight line. Compared with the situation where the mold is not supported in the same straight line, supporting the mold in the same straight line has the advantages of smoother transition, more stability and less vibration.

[0074] Moreover, when the guide bearing 14 enters the straight section 13-1, the straight section 13-1 can provide a lateral limiting function to prevent the guide bearing 14 and the second support seat 8 from lateral shaking. In addition, the tightening fit of the first hook 16 and the second hook 17 allows the second support seat 8 to stay relatively stably with the first support seat 7 to ensure a smooth transition of the mold.

[0075] Combine Figure 7-Figure 8 The side of the second support seat 8 is provided with an extrusion strip 18, and the end of the extrusion strip 18 close to the hydraulic press 4 is provided with an inclined extrusion surface so that the first support seat 7 can completely squeeze the second support seat 8 to one side and always keep it in a staggered avoidance state.

[0076] Combine Figure 5-Figure 6 The mold support assembly also includes an end reinforcement support structure, which includes a support rod 19 and a support frame 20. One end of the support rod 19 is rotatably connected to the bottom of the end of the first support seat 7 near the hydraulic press 4; the support frame 20 is a triangular structure, and the first corner of the support frame 20 is rotatably connected to the other end of the support rod 19, and the second corner of the support frame 20 is rotatably connected to the mounting rod 21; the mounting rod 21 is fixedly set on the crossbeam 22 of the transition frame 5; in the supporting state, the third corner of the support frame 20 is against the crossbeam 22 of the transition frame 5.

[0077] With the above structure, in the supported state, the first support base 7 extends beyond the transition frame 5 and is relatively long, allowing the mold to be securely delivered to the hydraulic press 4. At this time, the support frame 20 rests against the crossbeam 22 of the transition frame 5, reinforcing the end of the first support base 7 so that the first support base 7 has sufficient support force to support the mold. Furthermore, in the unsupported state, the support rod 19 and support frame 20 can retract as the first support base 7 retracts, reducing space usage.

[0078] Example 3

[0079] Combine Figure 5-Figure 6 and Figure 10-11 , there are three chain guide rails 10. What is different from Example 1 is that a telescopic supporting structure is provided below the middle chain guide rail 10, and the telescopic supporting structure includes a supporting bracket 23, a supporting spring 24 and a descending avoidance transmission assembly. The top of the supporting bracket 23 is fixedly connected to the chain guide rail 10, and the lower end of the supporting bracket 23 is a columnar structure and can vertically slide through the supporting mounting plate 25. The supporting mounting plate 25 is fixedly set on the transition frame 5; the supporting spring 24 is sleeved on the lower end of the supporting bracket 23, and the two ends of the supporting spring 24 are respectively pressed between the top of the supporting bracket 23 and the supporting mounting plate 25.

[0080] The descent avoidance transmission assembly includes a descent avoidance transmission wheel 26, a descent avoidance swing frame 27 and a descent avoidance transmission seat 28. The descent avoidance swing frame 27 is rotatably connected to the transition frame 5, one end of the descent avoidance swing frame 27 is rotatably connected to the descent avoidance transmission wheel 26, and the other end of the descent avoidance swing frame 27 is provided with an oblong hole 27-1; the axis of the descent avoidance transmission wheel 26 extends horizontally and is perpendicular to the driving direction of the telescopic drive mechanism; the descent avoidance transmission seat 28 is fixedly arranged on the side wall of the chain guide 10 located in the middle, and the descent avoidance transmission seat 28 is provided with a transmission part extending into the oblong hole 27-1; the side wall of the chain guide 10 closest to the hydraulic press 4 is provided with a descent push bar 29, and in the non-descent and contracted state, the descent avoidance transmission wheel 26 is located on the moving path of the descent push bar 29.

[0081] Through the above structure, after the mold change is completed, the first support seat 7 and the chain guide 10 closest to the hydraulic press 4 are driven by the telescopic drive mechanism to move in the direction away from the hydraulic press 4, and the descending push bar 29 located on the side wall of the chain guide 10 closest to the hydraulic press 4 pushes the descending avoidance transmission wheel 26 to swing downward, thereby driving the entire descending avoidance swing frame 27 to swing downward, thereby pressing down the descending avoidance transmission seat 28, so that the middle chain guide 10 moves downward, thereby avoiding the chain guide 10 closest to the hydraulic press 4, until the descending avoidance transmission wheel 26 is pressed under the descending push bar 29. At this time, the middle chain guide 10 has given up the position of accommodating the chain guide 10 closest to the hydraulic press 4, so that the chain guide 10 closest to the hydraulic press 4 is covered on the top of the chain guide 10 that can be retracted in the middle, as shown in FIG. Figure 10 During the above process, the supporting spring 24 is deformed and stores energy.

[0082] When the mold needs to be changed, the first support seat 7 and the chain guide 10 closest to the hydraulic press 4 are driven by the telescopic drive mechanism to move toward the hydraulic press 4. When the descending push bar 29 disengages from the descending avoidance transmission wheel 26, the middle chain guide 10 loses its limit and obstruction, and the supporting spring 24 begins to release potential energy to restore deformation, driving the middle chain guide 10 to rise and reset until it is in the same straight line with other chain guides 10.

[0083] The above is a preferred embodiment of the present invention, but the embodiment of the present invention is not limited to the above content. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A mold change transition bridge, characterized in that: It includes a transition frame, a supporting assembly and a telescopic driving mechanism arranged on the transition frame; The transition frame is fixedly arranged in front of the oil press; The support assembly is provided with multiple groups, and each group includes a pulley and a support seat, wherein the pulley is provided in multiple groups and is rotatably arranged on the support seat; the support seat includes a first support seat and a second support seat, wherein the first support seat is arranged on the transition frame through a sliding guide structure, and the first support seat is connected to the driving end of the telescopic drive mechanism; In the supporting state, the first supporting seat is located between the second supporting seat and the hydraulic press to support the mold; in the non-supporting state, the first supporting seat is retracted to one side of the second supporting seat.

2. The mold change transition bridge according to claim 1, characterized in that: The second support base is fixedly arranged on the transition frame. In the supporting state, in the parallel projection of the driving direction of the telescopic driving mechanism, there is no overlap between the first support base and the second support base.

3. The mold change transition bridge according to claim 1, characterized in that: The telescopic driving mechanism includes a telescopic driving cylinder, a cylinder body of the telescopic driving cylinder is fixedly arranged on the transition frame, and a telescopic rod of the telescopic driving cylinder is connected to the first support seat.

4. The mold change transition bridge according to claim 1, characterized in that: The sliding guide structure includes a slide rail and a slider. The slider is fixed on the transition frame, and the slide rail is fixed on the bottom of the first support seat.

5. The mold change transition bridge according to claim 1, characterized in that: A sliding avoidance assembly is provided between the second support seat and the transition frame, and the sliding avoidance assembly includes a sliding guide plate, a guide bearing and a return spring; The sliding guide plate is fixedly mounted on the transition frame, and is provided with at least two avoidance guide grooves, each of which includes two straight sections and one inclined section, the two straight sections being located at both ends of the inclined section, and the length directions of the two straight sections being parallel to the driving direction of the telescopic drive mechanism; The number of the guide bearings is the same as the number of the avoidance guide grooves. The guide bearings are rotatably connected to the bottom of the second support seat and are located in the avoidance guide grooves. The axes of the guide bearings extend vertically. The opening width of the avoidance guide grooves is smaller than the width of the inner cavity. The two ends of the return spring are fixedly connected to the sliding guide plate and the second support seat respectively; A first hook is provided at one end of the first support base away from the hydraulic press, and a second hook is provided at one end of the first support base close to the hydraulic press to cooperate with the first hook, wherein the first hook is bent downward and the second hook is bent upward; In the supporting state, the first supporting base and the second supporting base are located on the same straight line.

6. The mold change transition bridge according to claim 1, characterized in that: The mold support assembly further includes an end reinforcement support structure, which includes a support rod and a support frame, one end of the support rod is rotatably connected to the lower end of the first support base near the hydraulic press; The support frame is a triangular structure, the first corner of the support frame is rotatably connected to the other end of the support rod, and the second corner of the support frame is rotatably connected to the mounting rod; the mounting rod is fixedly arranged on the crossbeam of the transition frame; In the supporting state, the third corner of the supporting frame rests on the crossbeam of the transition frame.

7. The mold change transition bridge according to claim 1, characterized in that: The transition frame is provided with a chain guide rail for arranging the chain. The chain guide rail is provided with at least two, and the chain guide rail closest to the hydraulic press is fixedly connected to the first support seat through a cross bar.

8. The mold change transition bridge according to claim 7, characterized in that: The transition frame is provided with a lifting drive cylinder, and the telescopic rod of the lifting drive cylinder is fixedly connected to one or more chain guide rails that are not closest to the hydraulic press; In the supporting working state, all chain guides are located in the same straight line.

9. The mold change transition bridge according to claim 7, characterized in that: There are three chain guide rails, and a telescopic support structure is provided below the middle chain guide rail, which includes a support frame, a support spring and a descending avoidance transmission assembly; The top of the support bracket is fixedly connected to the chain guide rail, and the lower end of the support bracket is a columnar structure and can vertically slide through the support mounting plate, and the support mounting plate is fixedly set on the transition frame; The supporting spring is sleeved on the lower end of the supporting bracket, and the two ends of the supporting spring are respectively pressed tightly between the top of the supporting bracket and the supporting mounting plate; The descending avoidance transmission assembly includes a descending avoidance transmission wheel, a descending avoidance swing frame and a descending avoidance transmission seat, the descending avoidance swing frame is rotatably connected to the transition frame, one end of the descending avoidance swing frame is rotatably connected to the descending avoidance transmission wheel, and the other end of the descending avoidance swing frame is provided with an oblong hole; the axis of the descending avoidance transmission wheel extends horizontally and is perpendicular to the driving direction of the telescopic drive mechanism; the descending avoidance transmission seat is fixedly arranged on the side wall of the chain guide rail located in the middle, and the descending avoidance transmission seat is provided with a transmission part extending into the oblong hole; A descending push bar is provided on the side wall of the chain guide rail closest to the hydraulic press. In the non-descending and contracted state, the descending avoidance transmission wheel is located on the moving path of the descending push bar.

10. A mold changing device, characterized in that: It comprises a mold changing car, a push-pull mechanism and the mold changing transition bridge according to any one of claims 1 to 9, wherein the mold changing car is located between the push-pull mechanism and the mold changing transition bridge, and the mold changing transition bridge is located between the mold changing car and the hydraulic press.

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