A rubber toroidal preform loader

Abstract

The utility model discloses a rubber annular preform feeder, including fixed plate, still including the pressing plate and the shaping plate who are arranged in turn above fixed plate, a plurality of third round holes are seted up on fixed plate, the position corresponding to third round hole on fixed plate is provided with one -to -one corresponding core shaft, and the core shaft is formed by integral moulded fixed ring and four clamping claws, and the outer surface of four clamping claws is arc surface, the position corresponding to four clamping claws of every core shaft of shaping plate is provided with one -to -one corresponding sector mortise, utilize the inner diameter of rubber ring forming piece that the core shaft upper end diameter is far less than, and operating personnel can pre -sleeve on the core shaft fast, easily, again utilize shaping plate to exert force to rubber ring forming piece on the core shaft, can complete the shaping operation to the rubber ring forming piece that is curved deformation under the natural state, convenient and fast, need not spend a lot of time, and the process is simple, saves the feeding time, and improves work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of feeder technology, specifically, it relates to a feeder for rubber ring preforms. Background Technology

[0002] Feeders play a crucial role in the production of rubber products. Through manual operation, these fixtures place raw materials into designated positions on the mold, significantly improving production efficiency. This type of fixture reduces the time spent on the worktable during feeding, while ensuring accuracy and efficiency, thus enhancing overall production efficiency. Furthermore, feeding fixtures effectively reduce labor intensity and alleviate the physical burden on workers, especially important in high-volume production conditions requiring frequent and rapid feeding. Finally, feeding fixtures can also perform a shaping function, resulting in more precise shapes for rubber ring molded parts, improving product quality and reducing rubber consumption. In conclusion, feeding fixtures are of great significance to the production of rubber products by improving production efficiency, reducing labor intensity, ensuring product quality, and guaranteeing production safety.

[0003] However, due to the fact that the rubber ring forming parts are twisted and deformed in their natural state in the existing feeding tooling, and the inner diameter of the rubber ring forming parts is basically smaller than the diameter of the mandrel, it is very difficult for operators to put the rubber ring forming parts on the mandrel. The whole operation process is very unfriendly to novices, requiring not only a high level of skill, but also prolonging the feeding time, restricting the capacity of the canopy and the number of cavities, and has certain limitations. Utility Model Content

[0004] To address the technical problem of reduced work efficiency caused by the twisted and deformed nature of existing feeding fixtures, where the inner diameter of the rubber ring preform is smaller than the mandrel diameter, resulting in difficult operation, long feeding time, and reduced work efficiency, this utility model provides a rubber ring preform feeder.

[0005] The objective of this utility model can be achieved through the following technical solutions: A rubber ring preform feeder includes a fixed plate; it also includes a pressure plate and a shaping plate arranged sequentially above the fixed plate; the fixed plate has multiple third circular holes; a mandrel is provided on the fixed plate corresponding to the third circular holes, the mandrel having a stepped shaft structure; the mandrel is composed of an integrally formed fixed ring and four claws, and the outer surfaces of the four claws are all arc surfaces; the rubber ring preform is sleeved on the corresponding mandrel, the diameter of the mandrel being smaller than the inner diameter of the rubber ring preform; the pressure plate has a second circular hole corresponding to the mandrel, and each mandrel is inserted into the corresponding second circular hole; the shaping plate has a fan-shaped slot corresponding to the four claws of each mandrel.

[0006] Furthermore, the fixing plate has four fixing holes arranged in a circumferential array around each third circular hole; the bottom of the fixing ring also has four fixing holes arranged in a circumferential array, and the mandrel is fixed to the fixing plate by screws through the fixing holes.

[0007] Furthermore, the fixing plate and the pressure plate are each provided with a through first round hole near the four corners; a sliding rod is inserted into the first round hole of the pressure plate and the fixing plate, and the fixing plate is slidably connected to the pressure plate via the sliding rod.

[0008] Furthermore, a first limiting block is fixedly connected to the upper part of the slide rod; a second limiting block is provided at the lower part of the slide rod, and the second limiting block is fixed to the slide rod by a nut; a return spring is sleeved on the slide rod, and the return spring is located between the fixed plate and the second limiting block.

[0009] Furthermore, the diameters of the first limiting block and the second limiting block are both larger than the diameter of the first circular hole, and the first limiting block is located on the upper surface of the pressure plate.

[0010] Furthermore, two symmetrically arranged positioning holes are provided on one side of the fixing plate, pressure plate, and shaping plate; positioning pins are inserted into the positioning holes.

[0011] Furthermore, the length of the locating pin is greater than the length of the slide rod.

[0012] Furthermore, handles are symmetrically arranged on both sides of the lower surface of the pressure plate; handles are also arranged on the upper surface of the shaping plate near both sides.

[0013] The beneficial effects of this utility model are: 1. This utility model uses a mandrel on a fixed plate. The mandrel has a special stepped shaft structure, and the upper diameter of the mandrel is much smaller than the inner diameter of the rubber ring forming part. This allows the operator to quickly and easily pre-fit the forming part onto the mandrel. Then, the shaping plate applies force to the rubber ring forming part on the mandrel, thus completing the shaping operation of the rubber ring forming part that is bent and deformed in its natural state. This is convenient, quick, and does not require much time. The process is simple, saves material loading time, and improves work efficiency.

[0014] 2. This utility model, by setting up a positioning pin, sliding rod, and reciprocating spring, after the shaping of the rubber ring part is completed, flips the combined pressure plate and fixing plate over. Using the sliding rod and reciprocating spring, a force is applied to the pressure plate, causing it to move away from the fixing plate, thereby driving the rubber ring part to fall off the mandrel and completing the unloading operation of the rubber ring part. This replaces the traditional manual prying or knocking method, which is not only simple and quick to operate and can significantly improve production efficiency, but also effectively avoids scratching or stretching deformation of the surface of the precision rubber ring workpiece, ensuring the molding quality and consistency of the product.

[0015] 3. This utility model incorporates a handle, positioning holes, and positioning pins. During the shaping or blanking process using the forming plate and pressure plate, the operator can easily insert the positioning pins precisely into the preset positioning holes using the handle. This allows for quick and accurate application of force to the forming plate, effectively limiting any circumferential swaying or axial movement that may occur during operation. The tight fit between the positioning pin and the positioning hole after insertion ensures the stability and concentricity of the relative positions of the mold components during shaping and blanking operations. This prevents component displacement or skew caused by external forces or equipment vibration, thereby improving the precision and consistency of the shaping process and making subsequent blanking operations smoother and more reliable. Overall, this increases production efficiency and reduces the scrap rate caused by misalignment. Attached Figure Description

[0016] Figure 1 This is an exploded view of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a top view of the overall structure of this utility model; Figure 4 This is a schematic diagram of the structure of the reset spring in this utility model; Figure 5 This is a schematic diagram of the positioning pin in this utility model; Figure 6 This is a schematic diagram of the shaping plate in this utility model; Figure 7 This is a schematic diagram of the structure of the pressure plate of this utility model; Figure 8 This is a schematic diagram of the overall structure of the mandrel in this utility model; Figure 9 This is a bottom view of the mandrel in this utility model; Figure 10 This is a schematic diagram of the structure of the fixing plate in this utility model; Figure 11 This is a schematic diagram of the slide bar in this utility model; The attached diagram lists the components represented by each number as follows: 1. Pressure plate; 2. Shaping plate; 3. Fixing plate; 4. Mandrel; 41. Fixing ring; 42. Fixing hole; 43. Claw; 5. Fan-shaped jaw; 6. Handle; 7. Positioning hole; 8. Rubber ring molded part; 9. Positioning pin; 10. Slide rod; 11. Return spring; 12. Second limit block; 13. First round hole; 14. Second round hole; 15. Third round hole; 16. First limit block. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1 As shown, a rubber ring preform feeder includes a fixing plate 3, a shaping plate 2, and a pressure plate 1. The fixing plate 3, the shaping plate 2, and the pressure plate 1 are all rectangular structures. The pressure plate 1 is slidably connected above the fixing plate 3. The width and length of the pressure plate 1 are both greater than those of the fixing plate 3. The shaping plate 2 is provided above the pressure plate 1. The shaping plate 2 has the same size and specifications as the pressure plate 1.

[0019] Please see Figures 4-5 , Figure 7 and Figure 10 As shown, the fixing plate 3 has multiple third circular holes 15; the fixing plate 3 has four fixing holes 42 arranged in a circular array around each third circular hole 15; the fixing plate 3 and the pressure plate 1 have through first circular holes 13 near the four corners, and the diameter of the first circular holes 13 is smaller than the diameter of the third circular holes 15; the pressure plate 1 and the fixing plate 3 have a sliding rod 10 inserted into the first circular holes 13 of the fixing plate 3, and the fixing plate 3 is slidably connected to the pressure plate 1 via the sliding rod 10.

[0020] Please see Figure 11 As shown, a first limiting block 16 is fixedly connected to the upper part of the slide rod 10. The diameter of the first limiting block 16 is larger than the diameter of the first circular hole 13, and the first limiting block 16 is located on the upper surface of the pressure plate 1. A second limiting block 12 is provided at the lower part of the slide rod 10. The diameter of the second limiting block 12 is larger than the diameter of the first circular hole 13, and the second limiting block 12 is fixed to the slide rod 10 by a nut. A return spring 11 is sleeved on the slide rod 10. The return spring 11 is located between the fixed plate 3 and the second limiting block 12.

[0021] Please see Figures 1-4 As shown, two symmetrically arranged positioning holes 7 are opened on one side of the fixing plate 3, the pressure plate 1, and the shaping plate 2; a positioning pin 9 is inserted into the positioning hole 7, and the end of the positioning pin 9 that passes through the lower surface of the fixing plate 3 is provided with a threaded part. The positioning pin 9 is fixed to the fixing plate 3 by a nut; the length of the slide rod 10 is less than the length of the positioning pin 9; handles 6 are symmetrically arranged on both sides of the lower surface of the pressure plate 1. The handles 6 are used to assist the operator in applying force more effectively.

[0022] Please see Figures 4-5 , Figures 7-10As shown, a mandrel 4 is provided on the fixing plate 3 at the position corresponding to the third circular hole 15. The mandrel 4 has a stepped shaft structure. The mandrel 4 is integrally formed by the fixing ring 41 and four claws 43 arranged in a circular array on the fixing ring 41, and the outer surface of the four claws 43 is curved. The bottom of the fixing ring 41 is provided with four circular array fixing holes 42. The mandrel 4 is fixed to the fixing plate 3 with screws through the fixing holes 42. The pressure plate 1 is provided with a second circular hole 14 at the position corresponding to the mandrel 4, and each mandrel 4 is inserted into the corresponding second circular hole 14. A rubber ring forming part 8 is sleeved on the four claws 43. The diameter of the mandrel 4 is smaller than the diameter of the rubber ring forming part 8, and the upper diameter of the claws 43 is much smaller than the inner diameter of the rubber ring forming part 8, which makes it easy for the rubber ring forming part 8 to be quickly and easily pre-fitted onto the mandrel 4.

[0023] Please see Figure 1 and Figure 6 As shown, handles 6 are provided on the upper surface of the shaping plate 2 near both sides; the shaping plate 2 has a corresponding fan-shaped slot 5 at the position of the four claws 43 of each mandrel 4, which is a reserved insertion channel for the claws 43.

[0024] It is worth noting here that the relationship between the size (ФA) of the rubber ring forming part 8 and the size (ФB) of the mandrel 4 in this embodiment is: ФA-ФB=1~2 (mm).

[0025] To facilitate understanding of the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below: In practical use, the operator places the assembled fixing plate 3 and pressure plate 1 flat on the workbench, keeping the mandrel 4 vertically upward. Then, the rubber ring forming parts 8 to be shaped are sequentially fitted onto the mandrel 4, completing the pre-fitting of the rubber ring forming parts 8. Next, the operator aligns the positioning hole 7 on the shaping plate 2 with the positioning pin 9 that passes through the pressure plate 1 and fixing plate 3. Using the handle 6 on the upper surface of the shaping plate 2, a force is applied to the shaping plate 2. Under the pressure of the shaping plate 2, the mandrel 4 passes through the shaping plate 2. At this time, the rubber ring forming parts 8 in their natural state on the mandrel 4 are pressed down to the lower part of the mandrel 4. Since the upper diameter of the mandrel 4 is smaller than the lower diameter, the naturally bent and deformed rubber ring forming parts 8 are stretched open and restored to their original shape. At this time, the shaping operation of the rubber ring parts is completed.

[0026] After the rubber molding part is shaped, the operator removes the shaping plate 2, flips the assembled pressure plate 1 and fixing plate 3, and uses the positioning pin 9 to place them flat on the workbench with the lower surface of the fixing plate 3 facing upward. At this time, the operator uses the handle 6 on the lower surface of the pressure plate 1 to apply force to the pressure plate 1. Since the pressure plate 1 and the fixing plate 3 are slidably connected by the slide rod 10, under the pressure, the pressure plate 1 moves away from the fixing plate 3 and slides downward, causing the shaped rubber ring molding part 8 on the mandrel 4 to fall off the mandrel 4 onto the workbench, thus completing the unloading of the rubber ring molding part 8.

[0027] This invention utilizes a mandrel 4 on a fixed plate 3. The mandrel 4 has a special stepped shaft structure, and its upper diameter is much smaller than the inner diameter of the rubber ring forming part 8. This allows the operator to quickly and easily pre-fit the forming part onto the mandrel 4. Then, the shaping plate 2 applies force to the rubber ring forming part 8 on the mandrel 4, thus completing the shaping operation of the rubber ring forming part 8 that is bent and deformed in its natural state. This is convenient, quick, and does not require much time. The process is simple, saves material loading time, and improves work efficiency.

[0028] Furthermore, by setting up a positioning pin 9, a sliding rod 10, and a reciprocating spring, after the shaping of the rubber ring forming part 8 is completed, the combined pressure plate 1 and the fixing plate 3 are flipped over. The sliding rod 10 and the reciprocating spring are used to apply force to the pressure plate 1, causing the pressure plate 1 to move away from the fixing plate 3, thereby causing the rubber ring forming part 8 to fall off the mandrel 4, completing the unloading operation of the rubber ring forming part 8. This replaces the traditional manual prying or knocking method, which is not only simple and quick to operate and can significantly improve production efficiency, but also effectively avoids scratches or stretching deformation on the surface of the precision rubber ring workpiece, ensuring the molding quality and consistency of the product.

[0029] Furthermore, this invention incorporates a handle 6, a positioning hole 7, and a positioning pin 9. During the shaping or unloading process using the shaping plate 2 and the pressure plate 1, the operator can easily insert the positioning pin 9 precisely into the pre-set positioning hole 7 using the handle 6. This allows for quick and accurate application of force to the shaping plate 2, effectively limiting any circumferential swaying or axial movement that may occur during operation. After insertion, the tight fit between the positioning pin 9 and the positioning hole 7 ensures the stability and concentricity of the relative positions of the mold components during shaping and unloading operations. This prevents component displacement or skew caused by external forces or equipment vibration, thereby improving the precision and consistency of the shaping process and making subsequent unloading operations smoother and more reliable. Overall, this increases production efficiency and reduces the scrap rate caused by misalignment.

[0030] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A feeder for rubber ring preforms, comprising a fixing plate (3); characterized in that: It also includes a pressure plate (1) and a shaping plate (2) arranged sequentially above the fixing plate (3); The fixing plate (3) has multiple third circular holes (15); the fixing plate (3) has a corresponding mandrel (4) at the position of the third circular hole (15), and the mandrel (4) has a stepped shaft structure. The mandrel (4) is composed of an integrally formed fixing ring (41) and four claws (43), and the outer surfaces of the four claws (43) are all arc surfaces; the rubber ring molded part (8) is sleeved on the corresponding mandrel (4), and the diameter of the mandrel (4) is smaller than the inner diameter of the rubber ring molded part (8); The pressure plate (1) has a corresponding second round hole (14) at the position of the mandrel (4), and each mandrel (4) is inserted into the corresponding second round hole (14); The shaping plate (2) has a corresponding fan-shaped slot (5) at the position of the four claws (43) of each mandrel (4).

2. The rubber ring preform feeder according to claim 1, characterized in that: The fixing plate (3) has four fixing holes (42) arranged in a circular array around each third circular hole (15); the bottom of the fixing ring (41) also has four fixing holes (42) arranged in a circular array. The spindle (4) is fixed to the fixing plate (3) with screws through the fixing holes (42).

3. The rubber ring preform feeder according to claim 1, characterized in that: The fixing plate (3) and the pressure plate (1) are provided with through first round holes (13) near the four corners; a slide rod (10) is inserted into the first round hole (13) of the pressure plate (1) and the fixing plate (3), and the fixing plate (3) is slidably connected to the pressure plate (1) via the slide rod (10).

4. The rubber ring preform feeder according to claim 3, characterized in that: A first limiting block (16) is fixedly connected to the upper part of the slide rod (10); a second limiting block (12) is provided at the lower part of the slide rod (10), and the second limiting block (12) is fixed to the slide rod (10) by a nut; a return spring (11) is sleeved on the slide rod (10), and the return spring (11) is located between the fixed plate (3) and the second limiting block (12).

5. A rubber ring preform feeder according to claim 4, characterized in that: The diameters of the first limiting block (16) and the second limiting block (12) are both greater than the diameter of the first circular hole (13), and the first limiting block (16) is located on the upper surface of the pressure plate (1).

6. The rubber ring preform feeder according to claim 1, characterized in that: Two symmetrically arranged positioning holes (7) are opened on one side of the fixing plate (3), the pressure plate (1) and the shaping plate (2); positioning pins (9) are inserted into the positioning holes (7).

7. A rubber ring preform feeder according to claim 6, characterized in that: The length of the positioning pin (9) is greater than the length of the slide bar (10).

8. A rubber ring preform feeder according to claim 1, characterized in that: Handles (6) are symmetrically arranged on both sides of the lower surface of the pressure plate (1); handles (6) are arranged on the upper surface of the shaping plate (2) near both sides.

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