Automatic push-pull steering wheel type die changing trolley

Abstract

The invention belongs to the technical field of die changing trolleys, and particularly relates to an automatic push-pull steering wheel type die changing trolley which comprises a trolley base, a supporting table and a protection mechanism are arranged above the trolley base, a protection bin is fixedly connected to the upper side of the supporting table, a push-pull assembly is arranged on the upper side of the supporting table, and the protection mechanism comprises a guide groove. The guide groove is formed in the upper side of the supporting table, a screw rod is rotationally connected into the guide groove, and a sliding block is slidably connected into the guide groove; and the threaded cylinder is in threaded connection with the screw rod. According to the automatic push-and-pull steering wheel type die changing trolley, through the use of the protection mechanism, a die can be stably positioned, so that the position of the die cannot deviate in the operation processes of turning, stopping, lifting and the like in the moving process of the die changing trolley, the stability of the subsequent die during pushing is ensured, and meanwhile, in the process, the die is prevented from being damaged. And the special-shaped mold can be positioned, and the using effect of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mold changing trolleys, in particular to an automatic push-pull steering wheel type mold changing trolley. Background Art

[0002] The mold changing trolley is mainly used for replacing and moving the mold. The mold changing trolley can protect the mold, and it also facilitates the fixation of the mold, improves the installation accuracy of the mold, and provides convenience for people in the processing of parts.

[0003] At present, in the prior art, a Chinese patent with announcement number CN208772298U discloses an anti-drop type mold changing trolley, which protects the mold by driving the rear baffle plate to rise when the mold reaches above the support plate.

[0004] However, although the device can protect the mold during actual use, the mold changing trolley will turn, stop, lift and so on during the movement, which will cause the vibration of the mold and shift the mold position, thereby causing the position of the subsequent mold to deviate when it is pushed. In view of this, we propose an automatic push-pull steering wheel type mold changing trolley. Summary of the invention

[0005] The main purpose of the present invention is to provide an automatic push-pull steering wheel type mold changing trolley, which can solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the automatic push-pull steering wheel type mold changing trolley proposed in the present invention comprises a trolley base, a support platform and a protection mechanism are arranged above the trolley base, a protection bin is fixedly connected to the upper side of the support platform, a push-pull assembly is arranged on the upper side of the support platform, and the protection mechanism comprises:

[0007] A guide groove, the guide groove is opened on the upper side of the support platform, a screw rod is rotatably connected in the guide groove, and a sliding block is slidably connected in the guide groove;

[0008] A threaded barrel, wherein the threaded barrel is threadedly connected to the screw rod, a motor is arranged in the support platform, and an output shaft of the motor is fixedly connected to the screw rod;

[0009] and a positioning assembly, wherein the positioning assembly is arranged on the upper side of the sliding block.

[0010] Preferably, a retractable protective cloth is fixedly connected to the outer wall of the sliding block.

[0011] Preferably, the positioning assembly comprises an L-column, the L-column is fixedly connected to the upper side of the sliding block, and a fixing assembly, a limiting assembly and a protective assembly are arranged above the sliding block.

[0012] Preferably, the fixing assembly includes a fixing plate, which is penetrated by the pressure rod and slidably connected to the pressure rod, a positioning plate is hinged at the end of the pressure rod, a fixing ring is fixedly connected to the outer wall of the pressure rod, and the fixing ring and the fixing plate are elastically connected by a reset spring. By using the reset spring, the pressure rod can drive the positioning plate to reset.

[0013] Preferably, the end of the pressure rod away from the positioning plate is fixedly connected with a small cylinder, and the small cylinder is slidably connected in the straight groove of the rotating rod. The rotating rod is rotatably connected to the positioning rod one, and the positioning rod one is fixedly connected to the outer wall of the fixed plate. A T rod is fixedly connected to the outer wall of the fixed plate, and the T rod is elastically connected to the inner wall of the L-pillar through a connecting spring. Through the use of the rotating rod and the positioning rod one, the positioning plate can position the special-shaped mold.

[0014] Preferably, the protective assembly includes a cross bar, which is slidably connected to the inner wall of the L-pillar, and the end of the cross bar away from the T-bar is hinged with a hinged rod 1, the end of the hinged rod 1 away from the cross bar is hinged with a vertical rod, and the bottom of the vertical rod is hinged with a hinged rod 2.

[0015] Preferably, a positioning rod 2 is fixedly connected to the inner wall of the L-pillar, and the positioning rod 2 is slidably connected to the straight groove of the hinge rod 2. A round rod is slidably connected in the straight groove at one end of the hinge rod 2 away from the vertical rod. The round rod is fixedly connected to the top of the insertion rod, and the insertion rod passes through the sliding block and is slidably connected to the sliding block. As the screw continues to rotate, the T rod will slide in the inner wall of the L-pillar, squeezing the cross rod, and under the action of the hinge rod 1, the vertical rod will descend, thereby driving the hinge rod 2 to move, so that the insertion rod is away from the insertion hole, releasing the limit on the threaded barrel, and allowing the threaded barrel to rotate when the screw continues to rotate.

[0016] Preferably, the limiting assembly includes a ratchet rod, which is rotatably connected to the outer wall of the sliding block, and a fixed block and a limiting block are fixedly connected to the outer wall of the sliding block. The ratchet rod and the fixed block are elastically connected by an arc spring. When the threaded barrel rotates counterclockwise, the ratchet can be limited by the ratchet rod, thereby enabling the sliding block to be reset when the screw rotates counterclockwise.

[0017] Preferably, the push-pull assembly comprises a guide rail, an electric slide is slidably connected to the guide rail, a bracket and a cushion block are fixedly connected to the upper side of the electric slide, and a push-pull block is rotatably connected to the bracket.

[0018] Preferably, a jack is provided on the outer wall of the threaded barrel, a ratchet is fixedly connected to the outer wall of the threaded barrel, an oil groove is provided inside the L-pillar, the oil groove is connected to a flow port, a limiting groove is provided inside the L-pillar, a baffle is slidably connected in the limiting groove, a through hole is provided on the outer wall of the baffle, a mounting groove is provided on the upper side of the vehicle base, a hydraulic cylinder is fixedly connected in the mounting groove, and during the descending process of the vertical rod, the baffle will be squeezed to move downward, so that the through hole of the baffle is first aligned with the flow port, so that the lubricating oil in the oil groove can enter the outer wall of the threaded barrel, reducing the friction between the threaded barrel and the sliding block when the threaded barrel rotates, and when the baffle continues to be pressed downward, the through hole of the baffle is staggered from the flow port, thereby achieving the blocking of the lubricating oil in the oil groove.

[0019] The present invention provides an automatic push-pull steering wheel type mold changing trolley. It has the following beneficial effects:

[0020] (1) The automatic push-pull steering wheel type mold changing trolley can stably position the mold through the use of a protective mechanism, so that the mold position will not shift during the operation of turning, stopping, lifting, etc. during the movement of the mold changing trolley, thereby ensuring the stability of the subsequent mold during pushing. At the same time, in this process, the special-shaped mold can be positioned, thereby improving the use effect of the device.

[0021] (2) The automatic push-pull steering wheel type mold changing trolley uses a protective component so that after the mold is positioned, while the screw continues to rotate, the T-rod will slide in the inner wall of the L-pillar, squeezing the cross bar. Under the action of the hinged rod one, the vertical rod will drop, thereby driving the hinged rod two to move, so that the insertion rod is away from the insertion hole, releasing the limit on the threaded barrel, so that the screw continues to rotate and the threaded barrel rotates. The motor output shaft will not be damaged due to the failure of the motor output shaft to be placed after the positioning plate positions the mold, thereby ensuring the normal use of the device.

[0022] (3) The automatic push-pull steering wheel type mold changing trolley uses a protective component and a baffle plate. When the vertical rod is lowered, the baffle plate is squeezed to move downward, so that the through hole of the baffle plate is aligned with the flow port first, so that the lubricating oil in the oil tank can enter the outer wall of the threaded barrel, reducing the friction between the threaded barrel and the sliding block when the threaded barrel rotates. Moreover, when the baffle plate is continuously pressed downward, the through hole of the baffle plate is staggered with the flow port, so as to seal the lubricating oil in the oil tank and prevent excessive lubricating oil from entering the outer wall of the threaded barrel.

[0023] (4) The automatic push-pull steering wheel type mold changing trolley uses a limit assembly so that when the threaded barrel rotates counterclockwise, the ratchet can be limited by the ratchet rod, thereby enabling the sliding block to be reset when the screw rod rotates counterclockwise, thereby achieving the reset of the protective mechanism and ensuring the continuous use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0027] Figure 3 For the present invention Figure 2 Schematic diagram of the structure of A;

[0028] Figure 4 It is a schematic diagram of the structure of the protection mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the structure of the vehicle base of the present invention;

[0030] Figure 6 For the present invention Figure 4 Schematic diagram of the structure of middle B;

[0031] Figure 7 It is a schematic cross-sectional view of the protective mechanism of the present invention;

[0032] Figure 8 For the present invention Figure 7 Schematic diagram of the C structure;

[0033] Fig. 9 It is a partial structural schematic diagram of the protection mechanism of the present invention;

[0034] Fig.10 For the present invention Fig. 9 Schematic diagram of the D structure;

[0035] Fig.11 It is a schematic diagram of the structure of the threaded barrel of the present invention.

[0036] Description of Figure Numbers:

[0037] 1. Car base; 2. Support platform; 3. Protective compartment; 4. Push-pull assembly; 5. Protective mechanism; 6. Telescopic protective cloth; 101. Mounting slot; 102. Hydraulic cylinder; 41. Guide rail; 42. Electric slide seat; 43. Bracket; 44. Push-pull block; 45. Pad; 51. Guide slot; 52. Screw; 53. Sliding block; 54. Threaded barrel; 55. Motor; 56. Positioning assembly; 541. Socket; 542. Ratchet; 561. L-pillar; 562. Fixing assembly; 563. Protective assembly; 564. Limiting assembly; 5611. Oil tank; 561 2. Flow port; 5613. Limiting groove; 5614. Baffle; 5615. Through hole; 5621. Fixed plate; 5622. Pressure rod; 5623. Positioning plate; 5624. Fixed ring; 5625. Small cylinder; 5626. Rotating rod; 5627. Positioning rod one; 5628. T rod; 5631. Cross bar; 5632. Articulated rod one; 5633. Vertical rod; 5634. Articulated rod two; 5635. Positioning rod two; 5636. Round rod; 5637. Insert rod; 5641. Ratchet rod; 5642. Fixed block; 5643. Limiting block.

[0038] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-Figure 11The present invention proposes an automatic push-pull steering wheel type mold changing trolley, comprising a trolley base 1, a support platform 2 and a protective mechanism 5 are arranged above the trolley base 1, and the use of the protective mechanism 5 can stably position the mold, so that the mold changing trolley will turn, stop, lift and other operations during the movement, and the mold position will not be offset, ensuring the stability of the subsequent mold when it is pushed. At the same time, in this process, the special-shaped mold can be positioned to improve the use effect of the device. The upper side of the support platform 2 is fixedly connected with a protective bin 3, and the support platform 2 is provided with a push-pull assembly 4 on the upper side, and the push-pull assembly 4 includes a guide rail 41, an electric slide 42 is slidably connected in the guide rail 41, a bracket 43 and a cushion block 45 are fixedly connected on the upper side of the electric slide 42, a push-pull block 44 is rotatably connected to the bracket 43, and the push-pull block 44 can be driven to rotate by the output shaft of the motor, so that when the electric slide 42 slides on the guide rail 41, the push-pull block 44 can push the mold, and at the same time, when the push-pull block 44 is driven to rotate by the output shaft of the motor, it hooks the mold, and then pulls the mold, thereby achieving a push-pull effect on the mold.

[0041] In the embodiment of the present invention, in order to stably position the mold, specifically, the protective mechanism 5 includes a guide groove 51, a threaded barrel 54 and a positioning assembly 56. The guide groove 51 is opened on the upper side of the support platform 2. A screw 52 is rotatably connected in the guide groove 51. A sliding block 53 is slidably connected in the guide groove 51. A telescopic protective cloth 6 is fixedly connected to the outer wall of the sliding block 53. The telescopic protective cloth 6 is used to prevent dust from entering the guide groove 51. The threaded barrel 54 is threadedly connected to the screw 52. A motor is provided in the support platform 2. 55, the output shaft of the motor 55 is fixedly connected to the screw rod 52, the positioning assembly 56 is arranged on the upper side of the sliding block 53, the positioning assembly 56 includes an L column 561, the L column 561 is fixedly connected to the upper side of the sliding block 53, and the upper side of the sliding block 53 is provided with a fixing assembly 562, a limiting assembly 564 and a protective assembly 563, wherein the fixing assembly 562 includes a fixing plate 5621, the fixing plate 5621 is penetrated by a pressure rod 5622 and is slidably connected to the pressure rod 5622, and the end of the pressure rod 5622 is hinged with a positioning plate 5 623, a fixing ring 5624 is fixedly connected to the outer wall of the pressure rod 5622, and the fixing ring 5624 is elastically connected to the fixing plate 5621 through a return spring. A small cylinder 5625 is fixedly connected to the end of the pressure rod 5622 away from the positioning plate 5623, and the small cylinder 5625 is slidably connected in the straight groove of the rotating rod 5626. The rotating rod 5626 is rotatably connected to the positioning rod 1 5627, and the positioning rod 1 5627 is fixedly connected to the outer wall of the fixing plate 5621. A T rod is fixedly connected to the outer wall of the fixing plate 5621 5628, the T rod 5628 is elastically connected to the inner wall of the L column 561 through a connecting spring. By starting the output shaft of the motor 55 to rotate clockwise, the screw rod 52 can be driven to rotate clockwise, so that the sliding block 53 drives the L column 561 to move, thereby realizing the positioning of the mold by the positioning plate 5623. At the same time, when the mold is of a special shape, the small cylinder 5625 moves in the straight groove of the rotating rod 5626, and the rotating rod 5626 rotates, so that the positioning plate 5623 fits the outer wall of the mold to realize the positioning of the mold.

[0042] Furthermore, in order to prevent the positioning plate 5623 from continuing to exert pressure on the mold after positioning the mold, so as to prevent damage to parts, specifically, the protection component 563 includes a cross bar 5631, the cross bar 5631 is slidably connected to the inner wall of the L-pillar 561, the cross bar 5631 is hinged with a hinge rod 1 5632 at one end away from the T-bar 5628, the hinge rod 1 5632 is hinged with a vertical rod 5633 at one end away from the cross bar 5631, the vertical rod 5633 is hinged with a hinge rod 2 5634 at the bottom, a positioning rod 2 5635 is fixedly connected to the inner wall of the L-pillar 561, the positioning rod 2 5635 is slidably connected to the straight groove of the hinge rod 2 5634, the hinge rod 2 5634 is slidably connected to the straight groove at one end away from the vertical rod 5633, and the round rod 5636 is slidably connected to the straight groove at one end The rod 5636 is fixedly connected to the top of the insertion rod 5637, and a socket 541 is provided on the outer wall of the threaded barrel 54. The insertion rod 5637 passes through the sliding block 53 and is slidably connected to the sliding block 53. When the mold is positioned, as the screw 52 continues to rotate, the T rod 5628 slides in the inner wall of the L column 561, squeezing the cross rod 5631. Under the action of the hinge rod 1 5632, the vertical rod 5633 is lowered, thereby driving the hinge rod 2 5634 to move, so that the insertion rod 5637 is away from the socket 541, and the limit on the threaded barrel 54 is released. When the screw 52 continues to rotate, the threaded barrel 54 rotates, and the output shaft of the motor 55 is not damaged due to the inability to place the output shaft of the motor 55 after the positioning plate 5623 positions the mold, thereby ensuring the normal use of the device.

[0043] Furthermore, in order to enable the protective mechanism 5 to be reset, specifically, a ratchet 542 is fixedly connected to the outer wall of the threaded barrel 54, and the limiting assembly 564 includes a ratchet rod 5641, and the ratchet rod 5641 is rotatably connected to the outer wall of the sliding block 53, and a fixed block 5642 and a limiting block 5643 are fixedly connected to the outer wall of the sliding block 53, and the ratchet rod 5641 and the fixed block 5642 are elastically connected by an arc spring. When the output shaft of the motor 55 rotates counterclockwise, it drives the threaded barrel 54 to rotate counterclockwise, and the ratchet 542 can be limited by the ratchet rod 5641, so that when the screw rod 52 rotates counterclockwise, the sliding block 53 is reset, and then the protective mechanism 5 is reset, thereby ensuring the continuous use of the device.

[0044] Furthermore, in order to reduce the friction between the threaded cylinder 54 and the sliding block 53 when the threaded cylinder 54 rotates, specifically, an oil groove 5611 is provided inside the L column 561, and the oil groove 5611 is connected to the flow port 5612. A limiting groove 5613 is provided inside the L column 561, and a baffle 5614 is slidably connected in the limiting groove 5613. A through hole 5615 is provided on the outer wall of the baffle 5614. When the vertical rod 5633 descends, the baffle 5614 is squeezed to move downward, so that the through hole 5615 of the baffle 5614 is aligned with the flow port 5612 first, so that the oil in the oil groove 5611 is The lubricating oil can enter the outer wall of the threaded barrel 54, reducing the friction between the threaded barrel 54 and the sliding block 53 when the threaded barrel 54 rotates, and when the baffle 5614 continues to be pressed downward, the through hole 5615 of the baffle 5614 is staggered from the flow port 5612, thereby sealing the lubricating oil in the oil groove 5611 and preventing excessive lubricating oil from entering the outer wall of the threaded barrel 54. The baffle 5614 and the limiting groove 5613 are elastically connected by a light spring, so that after the vertical rod 5633 is reset, the baffle 5614 will also be reset, and the baffle 5614 blocks the flow port 5612.

[0045] In addition, in order to be able to adjust the height of the support platform 2, specifically, a mounting groove 101 is opened on the upper side of the vehicle base 1, and a hydraulic cylinder 102 is fixedly connected to the mounting groove 101. By starting the hydraulic cylinder 102, the height of the support platform 2 can be adjusted.

[0046] It should be noted that the above-mentioned electrical components are all existing technology products, and are selected, installed and debugged by technicians in this field according to the needs of use to ensure that all electrical appliances can work normally. The components are all universal standard parts or components known to technicians in this field, and their structures and principles can be known by technicians in this field through technical manuals or conventional experimental methods, and no specific restrictions are made here.

[0047] When in use, when the mold is transported to the support table 2, the output shaft of the start motor 55 rotates clockwise, which can drive the screw 52 to rotate clockwise, so that the sliding block 53 drives the L column 561 to move, so that the positioning plate 5623 can position the mold. At the same time, when the mold is a special shape, the small cylinder 5625 moves in the straight groove of the rotating rod 5626, and the rotating rod 5626 rotates, so that the positioning plate 5623 fits the outer wall of the mold to achieve the positioning of the mold;

[0048] At the same time, after the mold is positioned, as the screw 52 continues to rotate, the T rod 5628 will slide in the inner wall of the L column 561, squeezing the cross rod 5631, and under the action of the hinge rod 1 5632, the vertical rod 5633 will be lowered, thereby driving the hinge rod 2 5634 to move, so that the insertion rod 5637 is away from the insertion hole 541, and the limit on the threaded barrel 54 is released, so that when the screw 52 continues to rotate, the threaded barrel 54 rotates, and the output shaft of the motor 55 will not be damaged due to the positioning plate 5623 not being able to place the output shaft of the motor 55 after positioning the mold;

[0049] At the same time, as the vertical rod 5633 descends, it will squeeze the baffle 5614 to move downward, so that the through hole 5615 of the baffle 5614 is aligned with the flow port 5612 first, so that the lubricating oil in the oil groove 5611 can enter the outer wall of the threaded cylinder 54, reducing the friction between the threaded cylinder 54 and the sliding block 53 when the threaded cylinder 54 rotates. Moreover, when the baffle 5614 continues to be pressed downward, the through hole 5615 of the baffle 5614 is staggered from the flow port 5612, thereby achieving the blocking of the lubricating oil in the oil groove 5611.

[0050] At the same time, when the output shaft of the motor 55 rotates counterclockwise, it drives the threaded cylinder 54 to rotate counterclockwise, and the ratchet 542 can be limited by the ratchet rod 5641, so that when the screw rod 52 rotates counterclockwise, the sliding block 53 is reset.

[0051] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An automatic push-pull steering wheel type mold changing trolley, comprising a trolley base (1), characterized in that: A support platform (2) and a protection mechanism (5) are arranged above the vehicle base (1); a protection bin (3) is fixedly connected to the upper side of the support platform (2); a push-pull assembly (4) is arranged on the upper side of the support platform (2); and the protection mechanism (5) comprises: A guide groove (51), wherein the guide groove (51) is provided on the upper side of the support platform (2), a screw rod (52) is rotatably connected in the guide groove (51), and a sliding block (53) is slidably connected in the guide groove (51); A threaded barrel (54), wherein the threaded barrel (54) is threadedly connected to the screw rod (52); a motor (55) is arranged in the support platform (2), and an output shaft of the motor (55) is fixedly connected to the screw rod (52); and a positioning assembly (56), wherein the positioning assembly (56) is arranged on the upper side of the sliding block (53).

2. The automatic push-pull steering wheel type mold changing trolley according to claim 1, characterized in that: A telescopic protective cloth (6) is fixedly connected to the outer wall of the sliding block (53).

3. The automatic push-pull steering wheel type mold changing trolley according to claim 1, characterized in that: The positioning assembly (56) comprises an L-column (561), wherein the L-column (561) is fixedly connected to the upper side of the sliding block (53), and a fixing assembly (562), a limiting assembly (564) and a protective assembly (563) are arranged above the sliding block (53).

4. The automatic push-pull steering wheel type mold changing trolley according to claim 3, characterized in that: The fixing assembly (562) includes a fixing plate (5621), which is penetrated by a pressure rod (5622) and is slidably connected to the pressure rod (5622), a positioning plate (5623) is hinged at the end of the pressure rod (5622), a fixing ring (5624) is fixedly connected to the outer wall of the pressure rod (5622), and the fixing ring (5624) is elastically connected to the fixing plate (5621) via a return spring.

5. The automatic push-pull steering wheel type mold changing trolley according to claim 4, characterized in that: A small cylinder (5625) is fixedly connected to one end of the pressure rod (5622) away from the positioning plate (5623), and the small cylinder (5625) is slidably connected in the straight groove of the rotating rod (5626). The rotating rod (5626) is rotatably connected to the first positioning rod (5627), and the first positioning rod (5627) is fixedly connected to the outer wall of the fixed plate (5621). A T rod (5628) is fixedly connected to the outer wall of the fixed plate (5621), and the T rod (5628) is elastically connected to the inner wall of the L-pillar (561) via a connecting spring.

6. The automatic push-pull steering wheel type mold changing trolley according to claim 5, characterized in that: The protective assembly (563) includes a cross bar (5631), and the cross bar (5631) is slidably connected to the inner wall of the L-pillar (561); one end of the cross bar (5631) away from the T-bar (5628) is hinged with a hinged rod 1 (5632); one end of the hinged rod 1 (5632) away from the cross bar (5631) is hinged with a vertical rod (5633); and the bottom of the vertical rod (5633) is hinged with a hinged rod 2 (5634).

7. The automatic push-pull steering wheel type mold changing trolley according to claim 6, characterized in that: A second positioning rod (5635) is fixedly connected to the inner wall of the L-pillar (561), and the second positioning rod (5635) is slidably connected in the straight groove of the second hinge rod (5634). A round rod (5636) is slidably connected in the straight groove at one end of the second hinge rod (5634) away from the vertical rod (5633), and the round rod (5636) is fixedly connected to the top of the insertion rod (5637). The insertion rod (5637) passes through the sliding block (53) and is slidably connected to the sliding block (53).

8. The automatic push-pull steering wheel type mold changing trolley according to claim 3, characterized in that: The limiting assembly (564) includes a ratchet rod (5641), which is rotatably connected to the outer wall of the sliding block (53), and a fixed block (5642) and a limiting block (5643) are fixedly connected to the outer wall of the sliding block (53), and the ratchet rod (5641) and the fixed block (5642) are elastically connected via an arc spring.

9. The automatic push-pull steering wheel type mold changing trolley according to claim 1, characterized in that: The push-pull assembly (4) comprises a guide rail (41), an electric slide seat (42) is slidably connected to the guide rail (41), a bracket (43) and a cushion block (45) are fixedly connected to the upper side of the electric slide seat (42), and a push-pull block (44) is rotatably connected to the bracket (43).

10. The automatic push-pull steering wheel type mold changing trolley according to claim 1, characterized in that: The outer wall of the threaded cylinder (54) is provided with an insertion hole (541), the outer wall of the threaded cylinder (54) is fixedly connected with a ratchet (542), the interior of the L-pillar (561) is provided with an oil groove (5611), the oil groove (5611) is connected with a flow port (5612), the interior of the L-pillar (561) is provided with a limiting groove (5613), a baffle (5614) is slidably connected in the limiting groove (5613), a through hole (5615) is provided on the outer wall of the baffle (5614), and the upper side of the vehicle base (1) is provided with a mounting groove (101), and a hydraulic cylinder (102) is fixedly connected in the mounting groove (101).

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