Tyre building machine carcass drum support positioning device

Abstract

The application discloses a carcass drum supporting and positioning device of a tire building machine, which lifting mechanism comprises a lifting cylinder installed at the bottom of an upper seat plate, the upper seat plate is installed on a lower seat plate through a support, and a piston rod I of the lifting cylinder extends out of the upper seat plate upwards; a guide sleeve is arranged on the upper seat plate, a guide supporting rod is arranged in each guide sleeve, a supporting frame is installed at the top of the guide supporting rod, and the top of the piston rod is installed at the bottom of the supporting frame; the lifting mechanism comprises a lifting plate, the lifting plate is installed on a sliding plate through a sliding pair I, the sliding plate is installed on a sliding plate seat through a sliding pair II, the sliding plate seat is installed on the lower seat plate, a pushing and lifting frame is installed on the sliding plate through a sliding pair III, an elastic element is press-fitted between the pushing and lifting frame and the sliding plate, and a connecting rod is hinged between the lifting plate and the pushing and lifting frame; a pushing and lifting cylinder is arranged at the rear side of the pushing and lifting frame, a piston rod II of the pushing and lifting cylinder is connected with the pushing and lifting frame, a top screw I for limiting the forward pushing of the sliding plate to a position is arranged on the lower seat plate, and a top screw II for limiting the forward pushing of the pushing and lifting frame to a position is arranged on the sliding plate.

Description

Technical Field

[0001] This invention relates to the structure of components of a tire forming machine, specifically a tire drum support and positioning device for a tire forming machine. Background Technology

[0002] The existing tire forming machine's tire drum support structure involves a cylinder rod pushing the support seat vertically upwards. The support seat then lifts the overhanging tail shaft of the tire drum to keep the drum horizontal, allowing for the bonding and rolling of various rubber materials on the drum. Before the drum moves, the cylinder rod lowers the drum support to avoid its movement.

[0003] Because the gas inside the cylinder is compressed, even if the cylinder is kept ventilated, the height of the support will gradually decrease over time. For example, in the tire drum support of 57-inch full-size and 63-inch large-size tire forming machines, the support will drop by 5mm after half an hour, causing the drum to overlap, which will have an adverse effect on the quality of the produced tire blanks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes a tire drum support and positioning device for a tire forming machine.

[0005] The tire forming machine tire drum support and positioning device, which can solve the problems of existing technologies, includes a lifting mechanism and a support mechanism, wherein:

[0006] 1. The lifting mechanism includes a lifting cylinder installed at the bottom of the upper seat plate. The upper seat plate is installed on the lower seat plate by left and right support frames. The piston rod I of the lifting cylinder extends upward from the upper seat plate, and the cylinder body of the lifting cylinder extends downward from the lower seat plate.

[0007] 2. The piston rod I is provided with guide sleeves that penetrate the upper seat plate on the left and right sides. Each guide sleeve is fitted with a guide support rod. Each guide support rod has an adjusting pad sleeve screwed into its bottom. The top of the left and right guide support rods is equipped with a support frame that can lift the tire drum tail shaft upward. The top of the piston rod I is installed at the bottom of the support frame. The lower seat plate is provided with clearance openings that align with each guide support rod.

[0008] 3. The lifting mechanism includes a lifting plate located at the rear of the lifting mechanism. The lifting plate is mounted on the slide plate via an upper and lower sliding pair I. The slide plate is mounted on the slide plate seat via a front and rear sliding pair II. The slide plate seat is mounted on the lower seat plate. A lifting frame is mounted on the slide plate via a front and rear sliding pair III. An elastic element is press-fitted between the lifting frame and the slide plate. A connecting rod is hinged between the lifting plate and the lifting frame.

[0009] 4. A lifting cylinder is installed on the lower seat plate on the rear side of the lifting frame. The piston rod II of the lifting cylinder extends forward and is connected to the lifting frame. The lower seat plate is provided with a set screw I that limits the sliding plate to push forward and into place. The sliding plate is provided with a set screw II that limits the lifting frame to push forward and into place.

[0010] 5. At the limit position of the sliding plate, the lifting plate is located below the bottom of the left and right guide support rods (the lifting cylinder has raised the left and right guide support rods); at the limit position of the lifting frame, the connecting rod is vertical (the previous connecting rod was inclined).

[0011] Further settings:

[0012] 1. The sliding pair I consists of a guide pin and a guide seat that cooperate with each other.

[0013] 2. The sliding pair II is an interlocking stepped structure.

[0014] 3. The sliding pair III is an interlocking dovetail structure.

[0015] Further settings:

[0016] 1. The lifting cylinder is a small thrust cylinder.

[0017] 2. The thrust cylinder is a high-thrust cylinder.

[0018] The beneficial effects of this invention are:

[0019] 1. In the structure of the tire drum support and positioning device of the tire forming machine of the present invention, the lifting cylinder with a smaller thrust overcomes its own weight and rises quickly to the tail shaft of the tire drum to support it, while the pushing cylinder with a larger thrust pushes the lifting plate upward through the connecting rod to support and lift the guide support rod. When the connecting rod is in a vertical state, it stops, and the pressure of the tire drum is borne by the guide support rod and the connecting rod to maintain the horizontality of the tire drum.

[0020] 2. The invention has an ingenious structure, which changes the direct force on the cylinder to the force on the guide support rod and connecting rod, thus solving the problem of drum displacement caused by gas compression and ensuring the fitting accuracy of the tire drum. Attached Figure Description

[0021] Figure 1 This is a first-view isometric view of one embodiment of the present invention, showing the initial state.

[0022] Figure 2 for Figure 1 The second-view isometric view of the implementation method shows the support positioning state.

[0023] Figure 3 for Figure 2 View A in the diagram.

[0024] Part Number Identification: 1. Upper Seat Plate; 2. Lifting Cylinder; 2-1. Piston Rod I; 3. Support Frame; 4. Lower Seat Plate; 5. Guide Sleeve; 6. Guide Support Rod; 7. Adjusting Pad Sleeve; 8. Slide Plate; 9. Lifting Plate; 10. Sliding Pair I; 11. Slide Plate Seat; 12. Sliding Pair II; 13. Sliding Pair III; 14. Lifting Frame; 15. Elastic Element; 16. Connecting Rod; 17. Lifting Cylinder; 17-1. Piston Rod II; 18. Tire Body Drum Tail Shaft; 19. Ejector Screw I; 20. Ejector Screw II; 21. Bracket. Detailed Implementation

[0025] The technical solution of the present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0026] The present invention relates to a tire forming machine tire drum support and positioning device, comprising a lifting mechanism and a support mechanism based on a frame structure.

[0027] The frame structure includes an upper base plate 1 and a lower base plate 4 at upper and lower positions. The upper base plate 1 is mounted on the lower base plate 4 via brackets 21 arranged symmetrically on the left and right. A through hole I is centrally located on the upper base plate 1, and symmetrical sleeve holes are formed on the upper base plate 1 to the left and right of through hole I. A through hole II is centrally located on the lower base plate 4, and symmetrical clearance openings are formed on the lower base plate 4 to the left and right of through hole II. Figure 1 , Figure 2 , Figure 3 As shown.

[0028] The lifting mechanism includes a vertically arranged lifting cylinder 2 (using a small-thrust cylinder). The lifting cylinder 2 is centrally mounted at the bottom of the upper seat plate 1. The piston rod I2-1 of the lifting cylinder 2 extends upward from the upper seat plate 1 through the through hole I, and the cylinder body of the lifting cylinder 2 extends downward from the lower seat plate 4 through the through hole II. Guide sleeves 5 are installed in each sleeve hole on the upper seat plate 1, and guide support rods 6 are slidably fitted in each guide sleeve 5. A nut and an adjusting pad sleeve 7 are screwed into the bottom of each guide support rod 6. Support frames 3 are mounted on the top of the left and right guide support rods 6. The top of the support frame 3 is an arc surface that can support the tire drum tail shaft 18 upward. The top of the piston rod I2-1 is mounted on the bottom of the support frame 3. Figure 1 , Figure 2 , Figure 3 As shown.

[0029] The lifting mechanism is located at the rear of the frame structure and includes a lifting plate 9 with guide support rods 6 on the left and right. The front bottom of the lifting plate 9 is mounted on the front of the slide plate 8 via upper and lower sliding pairs I10 (arranged on the left and right). The sliding pairs I10 consist of a guide pin (mounted at the bottom of the lifting plate 9) and a guide seat (mounted on the slide plate 8). The slide plate 8 is mounted in the slide plate seat 11 via front and rear sliding pairs II12 (arranged on the left and right). The sliding pairs II12 are interlocking stepped structures. The slide plate seat 11 is mounted on the lower seat plate 4. The lower seat plate 4 in front of the front end of the slide plate seat 11 is provided with left and right set screws I19 (to limit the forward movement of the slide plate 8). The slide plate 8 is mounted on the slide plate via front and rear sliding pairs I10. A lifting frame 14 (inverted "L" shape) is installed on a sliding pair III 13 (arranged on the left and right). The sliding pair III 13 has an interlocking dovetail structure. Elastic elements 15 (arranged on the left and right) are press-fitted between the lifting frame 14 and the sliding plate 8 to return the lifting frame 14 to its rearward position. Each elastic element 15 is an assembly with a compression spring threaded through a screw. Left and right connecting rods 16 are hinged between the bottom of the lifting plate 9 on the rear side of the left and right sliding pairs I 10 and the horizontal section of the lifting frame 14. A lifting cylinder 17 is installed on the lower seat plate 4 on the rear side of the lifting frame 14. The piston rod II 17-1 extending forward from the lifting cylinder 17 connects to the vertical section of the lifting frame 14. Left and right set screws II 20 (limiting the forward movement of the lifting frame 14) are provided on the front end of the sliding plate 8. Figure 1 , Figure 2 , Figure 3 As shown.

[0030] The operating mode of this invention is as follows:

[0031] 1. In such Figure 1 In the initial state shown, the lifting cylinder 2 is ventilated, and the piston rod I2-1 quickly lifts the support frame 3 to the tire drum tail shaft 18 and supports it. Since the thrust of the lifting cylinder 2 is small, the thrust generated is insufficient to support the tire drum to a horizontal position. The left and right guide support rods 6 rise accordingly, and the left and right adjusting pads 7 are lifted from below the lower seat plate 4 to the upper seat plate 1 and are higher than the lifting plate 9.

[0032] 2. For example Figure 3 As shown, when the lifting cylinder 17 is ventilated, the piston rod II 17-1 pushes the lifting frame 14, which in turn pushes the slide plate 8 forward. The slide plate 8 drives the lifting plate 9 to move forward below the left and right adjustment pads 7. The forward movement of the slide plate 8 is limited by the top screw I 19, which keeps the lifting plate 9 directly below the left and right adjustment pads 7.

[0033] 3. For example Figure 2As shown, piston rod II 17-1 overcomes the resistance of elastic element 15 and continues to push the lifting frame 14 forward. The lifting frame 14 lifts the lifting plate 9 through the left and right connecting rods 16 (obliquely placed). The lifting plate 9 pushes against the left and right adjusting pads 7 and lifts upward until the connecting rod 16 is in a vertical state. At this time, the lifting frame 14 is limited by the set screw II 20 and stops moving forward.

[0034] 4. Tighten the left and right adjusting pads 7 to adjust the tail shaft 18 of the tire drum so that the tire drum is kept in a horizontal position. Then tighten the adjusting pads 7 with the nut. The large load pressure of the tire drum is borne by the guide support rod 6 and the connecting rod 16. The piston rod I2-1 of the lifting cylinder 2 and the piston rod II17-1 of the pushing cylinder 17 no longer bear the pressure of the tire drum.

Claims

1. A tire forming machine tire drum support and positioning device, characterized in that... Includes lifting and support mechanisms, among which: The lifting mechanism includes a lifting cylinder (2) installed at the bottom of the upper seat plate (1). The upper seat plate (1) is installed on the lower seat plate (4) by left and right brackets (21). The piston rod I (2-1) of the lifting cylinder (2) extends upward from the upper seat plate (1), and the cylinder body of the lifting cylinder (2) extends downward from the lower seat plate (4). The piston rod I (2-1) is provided with guide sleeves (5) that pass through the upper seat plate (1) on the left and right sides. Each guide sleeve (5) is fitted with a guide support rod (6). Each guide support rod (6) is screwed with an adjustment pad sleeve (7) at the bottom. The left and right guide support rods (6) are equipped with a support frame (3) that can lift the tire drum tail shaft (18) upward. The top of the piston rod I (2-1) is installed at the bottom of the support frame (3). The lower seat plate (4) is provided with a clearance opening that aligns with each guide support rod (6). The lifting mechanism includes a lifting plate (9) located at the rear of the lifting mechanism. The lifting plate (9) is mounted on the slide plate (8) via an upper and lower sliding pair I (10). The slide plate (8) is mounted on the slide plate seat (11) via a front and rear sliding pair II (12). The slide plate seat (11) is mounted on the lower seat plate (4). A lifting frame (14) is mounted on the slide plate (8) via a front and rear sliding pair III (13). An elastic element (15) is press-fitted between the lifting frame (14) and the slide plate (8). A connecting rod (16) is hinged between the lifting plate (9) and the lifting frame (14). A lifting cylinder (17) is installed on the lower seat plate (4) on the rear side of the lifting frame (14). The piston rod II (17-1) of the lifting cylinder (17) extends forward and is connected to the lifting frame (14). The lower seat plate (4) is provided with a set screw I (19) for pushing the limiting slide plate (8) forward into place. The slide plate (8) is provided with a set screw II (20) for pushing the lifting frame (14) forward into place. At the limiting position of the slide plate (21), the lifting plate (9) is located below the bottom of the left and right guide support rods (6); at the limiting position of the lifting frame (14), the connecting rod (16) is vertical.

2. The tire drum support and positioning device for a tire forming machine according to claim 1, characterized in that: The sliding pair I (10) consists of a guide pin and a guide seat that cooperate with each other; The sliding pair II (12) is an interlocking stepped structure; The sliding pair Ⅲ (13) is an interlocking dovetail structure.

3. The tire drum support and positioning device for a tire forming machine according to claim 1 or 2, characterized in that: The lifting cylinder (2) is a low-thrust cylinder; The thrust cylinder (17) is a high-thrust cylinder.

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