A loading assisting device for a rubber blank

Abstract

The utility model discloses a kind of loading auxiliary devices for rubber blank, including tray and pressing mechanism;Tray is used to carry multiple adjacent placement rubber blank stacks;Pressing mechanism includes lifting drive assembly, cross bar assembly, height adjusting assembly and pressure rod assembly;Lifting drive assembly is used to drive cross bar assembly to move along vertical direction;Pressure rod assembly includes the pressure rod for down-pressing rubber blank stack to be loaded;Height adjusting assembly includes sleeve and height adjusting rod, the lower end of height adjusting rod is connected with pressure rod, sleeve is connected with cross bar assembly, and is slidably sleeved on height adjusting rod, height adjusting rod and sleeve are adjusted on the height of height adjusting rod by positioning hole and positioning bolt. The loading auxiliary device can make rubber blank stack not be caused by the sticking of rubber blank during loading Adjacent rubber blank stacks are set to be torn up.

Description

Technical Field

[0001] This utility model belongs to the technical field of rubber processing equipment, and specifically relates to an auxiliary device for feeding rubber blanks. Background Technology

[0002] In the rubber tire extrusion production process, the rubber blanks used are strips and are stacked together in a continuous S-shape to form a rubber blank pile. When the rubber blank pile is fed into the production process, one end of the strip rubber blank is manually pulled and placed on the conveyor, and then fed into the extruder through the conveyor.

[0003] Currently, rubber blanks are placed individually, meaning two rubber blanks are placed at a certain distance from each other, based on the fact that the bottom surface of a single rubber blank is approximately 1m. 2 Furthermore, operational space must be reserved for the handling of rubber blank piles. When multiple rubber blank piles are queuing to wait for loading, the space occupied is almost twice the bottom area of ​​the multiple rubber blank piles, resulting in a huge waste of production space; for example, five separately placed rubber blank piles will basically occupy 10m². 2 The space area is limited. Furthermore, since the rubber blanks are placed individually, they need to be transported one by one to the conveyor by handling equipment during transportation, which undoubtedly increases the workload of handling the rubber blanks. This results in the entire transportation process consuming a lot of manpower and resources and reducing the efficiency of rubber blank loading. Utility Model Content

[0004] To address the aforementioned problems, this utility model discloses a feeding auxiliary device for rubber blanks, which overcomes or at least partially solves the aforementioned problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a feeding auxiliary device for rubber blanks, the feeding auxiliary device including a tray and a pressing mechanism; The tray is used to support multiple adjacent stacks of rubber blanks; the pressing mechanism includes a lifting drive assembly, a crossbar assembly, a height adjustment assembly, and a pressure bar assembly; The crossbar assembly is fixedly connected between the lifting drive assembly and the height adjustment assembly. The lifting drive assembly is used to drive the crossbar assembly to move vertically. The pressure bar assembly includes a pressure bar, which is horizontally positioned and used to press down on the upper surface of the pile of rubber blanks to be loaded. The height adjustment assembly includes a sleeve and a vertically positioned height adjustment rod. The lower end of the height adjustment rod is connected to the middle of the pressure bar. The sleeve is fixedly connected to the crossbar assembly and slidably fitted onto the height adjustment rod. At least one side of the height adjustment rod has a plurality of first positioning holes, which are spaced apart along the length of the height adjustment rod. The sleeve has a second positioning hole, and a positioning pin is provided in the second positioning hole. The front end of the positioning pin can pass through the second positioning hole and be inserted into the first positioning hole.

[0007] Furthermore, the lower end of the height adjustment rod is rotatably connected to the middle part of the pressure rod, allowing the pressure rod to rotate in both the horizontal and vertical directions.

[0008] Furthermore, the height adjustment assembly also includes a connector; The connector is connected between the height adjusting rod and the pressure rod. The upper end of the connector has a longitudinal shaft, and the connector is rotatably connected to the lower end of the height adjusting rod through the longitudinal shaft. The lower end of the connector has a transverse shaft, and the connector is rotatably connected to the middle part of the pressure rod through the transverse shaft.

[0009] Furthermore, the crossbar assembly includes a first telescopic bar and a second telescopic bar; The first telescopic rod is slidably sleeved on the second telescopic rod, allowing the first and second telescopic rods to move relative to each other along their length. One end of the first telescopic rod is fixedly connected to the lifting drive assembly, and one end of the second telescopic rod is fixedly connected to the sleeve. An opening is formed on one side of the first telescopic rod, and the length direction of the opening extends along the length direction of the first telescopic rod. A third positioning hole corresponding to the position of the opening is formed on the second telescopic rod. A positioning screw is provided in the third positioning hole, and a flange is formed on the outer circumference of the positioning screw. When the positioning screw passes through the opening and is screwed into the third positioning hole, the flange presses against the first telescopic arms on both sides of the opening.

[0010] Furthermore, the lifting drive assembly includes a base, a lifting seat, and a drive source; The drive source is located between the lifting seat and the base, and is used to drive the lifting seat to move vertically on the base. The lifting seat is fixedly connected to the crossbar assembly. Both the base and the lifting seat are cylindrical. The lifting seat is slidably fitted onto the base and can rotate circumferentially relative to the base.

[0011] Furthermore, the drive source includes a cylinder and an air supply unit; The air supply unit is used to provide driving gas to the cylinder. The cylinder body is located inside the base and is fixedly connected to the base via a mounting seat. The piston rod of the cylinder is connected to the lifting seat.

[0012] Furthermore, the drive source also includes a first one-way throttle valve, a second one-way throttle valve, a pressure regulating valve, a handle valve, and a filter pressure reducing valve; The lower air port on the cylinder is connected to the first outlet of the handle valve through the first one-way throttle valve, the upper air port on the cylinder is connected to the second air outlet of the handle valve through the pressure regulating valve and the second one-way throttle valve in sequence, and the air inlet of the handle valve is connected to the air supply unit through the filter pressure reducing valve.

[0013] Furthermore, the lifting drive assembly also includes a fixed rod and a joint bearing; The fixing rod is fixed to the upper end of the lifting seat, and the lower end of the fixing rod is connected to a horizontally arranged rotating shaft. The piston rod of the cylinder is connected to the rotating shaft through the spherical bearing.

[0014] Furthermore, the lifting drive assembly also includes a graphite copper sleeve; The graphite copper sleeve is disposed between the base and the lifting seat.

[0015] Furthermore, the lever assembly also includes an operating handle; The operating handle is fixed to the upper end face of the pressure rod.

[0016] The advantages and beneficial effects of this utility model are: In this utility model's feeding auxiliary device, by setting up a tray and a lifting and movable pressure bar, multiple rubber blanks can be placed adjacent to each other on the tray without being torn apart during feeding. This allows multiple rubber blanks to be placed close together and transported synchronously, reducing the floor space occupied by multiple rubber blanks and the amount of handling work, thereby improving the feeding efficiency of rubber blanks. Furthermore, by setting a height adjustment rod between the crossbar assembly and the pressure bar, the pressure bar can be adjusted horizontally along with the height adjustment rod. The lifting drive assembly and the height adjustment assembly work together to achieve the superposition and coordination of the lifting stroke generated by the lifting drive assembly and the lifting stroke generated by the height adjustment assembly, expanding the lifting range of the pressure bar. This allows it to press rubber blanks with large height differences, broadening its application scenarios. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a three-dimensional structural diagram of the feeding auxiliary device performing the pressing operation in one embodiment of the present utility model; Figure 2 This is a front view of a rubber blank stacked on a pallet in one embodiment of the present invention; Figure 3 This is a three-dimensional structural diagram of the pressing mechanism in one embodiment of the present invention; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a front view of the pressing mechanism in one embodiment of the present invention; Figure 6 This is a left view of the pressing mechanism in one embodiment of the present invention; Figure 7 This is a diagram showing the connection structure between the cylinder and the base in one embodiment of the present invention; Figure 8 for Figure 7 A magnified view of a section at point B in the middle; Figure 9 This is a three-dimensional structural diagram of the crossbar assembly in one embodiment of the present invention; Figure 10 This is a perspective view of the connector in one embodiment of the present invention; Figure 11 This is a diagram showing the connection structure between the cylinder and the air supply unit in one embodiment of the present invention.

[0018] In the diagram: 1. Tray; 2. Lifting drive assembly; 21. Base; 22. Lifting seat; 23. Drive source; 231. Cylinder; 232. Air supply unit; 233. First one-way throttle valve; 234. Handle valve; 235. Pressure regulating valve; 236. Second one-way throttle valve; 237. Filter pressure reducing valve; 24. Mounting seat; 25. Fixing rod; 26. Rotating shaft; 27. Joint bearing; 28. Graphite copper sleeve; 3. Crossbar assembly; 31. First telescopic rod; 311. Opening 32. Second telescopic rod; 33. Positioning screw; 34. Fixing block; 4. Height adjustment assembly; 41. Height adjustment rod; 411. First positioning hole; 42. Sleeve; 43. Positioning pin; 44. Connector; 441. Longitudinal shaft; 442. Transverse shaft; 5. Pressure rod assembly; 51. Pressure rod; 52. Operating handle; 6. Rubber blank pile; 61. First rubber blank pile; 62. Second rubber blank pile; 63. Third rubber blank pile; 631. Initial end. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The terms "first" and "second" in the specification and claims of this utility model may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Rubber preforms are key intermediate semi-finished products in rubber product manufacturing. They refer to rubber blanks with specific shapes (such as blocks, sheets, strips, rings, etc.) and sizes, produced by mixing raw rubber with compounding agents (such as vulcanizing agents, reinforcing agents, fillers, etc.) and preforming. Their viscosity range is typically 10. 4 ~10 8 Pa·s (Pa) The inventors discovered that if two rubber stockpiles are placed adjacent to each other, their edges will contact and stick together. This sticking can cause the adjacent stockpiles waiting for the next feeding to become disordered during continuous feeding of one stockpile, affecting the continuous and orderly feeding of rubber stock and consequently impacting the extruder's feeding efficiency. This is especially true when the bending direction of the strip rubber stockpiles in an S-shape is perpendicular to the parallel direction of the adjacent stockpiles. During the feeding of one stockpile and the sequential unfolding of the S-shape, the tensile force generated by the adhesion between the two adjacent stockpiles moves continuously along the bending direction of the S-shape, causing uneven stress on the stockpiles waiting to be fed, making them more prone to tearing.

[0024] Based on this, this utility model, by setting up a pallet capable of supporting multiple adjacent rubber blank piles and a pressure bar for pressing down on the upper surface of the rubber blank piles, ensures that when one of the multiple adjacent rubber blank piles is loaded, the adhesion of the rubber blanks will not cause other rubber blank piles to be disturbed, thus ensuring the orderly loading. Furthermore, placing multiple rubber blank piles adjacent to each other on the pallet not only reduces the floor space occupied by the material, but also allows multiple rubber blank piles to be transported synchronously with the pallet, thereby reducing the workload of material handling. In addition, to ensure the stability of the pressing, existing loading auxiliary devices typically use hydraulic cylinders to provide the downward driving force to drive the pressing head for pressing. However, the piston rod of the hydraulic cylinder has a limited stroke, only able to drive the pressing head to move within a very small range. When facing multiple rubber blank piles with large height differences, it is impossible to perform the pressing work. Based on this, the present invention sets up a lifting drive assembly to drive the pressure rod to move vertically, and sets up a height adjustment rod between the crossbar assembly and the pressure rod to adjust the horizontal height of the pressure rod. This allows the lifting stroke generated by the lifting drive assembly and the lifting stroke generated by the height adjustment assembly to be superimposed and cooperate, thereby expanding the range of lifting stroke of the pressure rod. In this way, the pressure rod can press multiple rubber blanks with large height differences.

[0025] The technical solutions provided by the various embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] One embodiment of this utility model provides a feeding auxiliary device for rubber blanks, such as... Figures 1 to 6 As shown, the feeding auxiliary device includes a tray 1 and a pressing mechanism.

[0027] The pallet 1 is used to support multiple adjacent stacks of rubber blanks 6, meaning at least two stacks of rubber blanks 6 are placed adjacent to each other on the pallet 1, with direct contact between them and no wasted space. Compared to placing the rubber blanks 6 individually, this adjacent placement method saves 50% of the stacking space. Furthermore, multiple stacks of rubber blanks 6 on the pallet 1 can be moved synchronously with the pallet 1. This allows multiple stacks of rubber blanks 6 to be moved at once by moving the pallet 1, reducing the number of handling operations and significantly reducing the workload of material handling, thus improving the loading efficiency by at least 20% to 30%. The pressing mechanism includes a lifting drive assembly 2, a crossbar assembly 3, a height adjustment assembly 4, and a pressure bar assembly 5.

[0028] Specifically, the crossbar assembly 3 is arranged horizontally and is fixedly connected between the lifting drive assembly 2 and the height adjustment assembly 4. The lifting drive assembly 2 is used to drive the crossbar assembly 3 to move vertically. The pressure bar assembly 5 includes a pressure bar 51, which is arranged horizontally and used to press down on the upper end face of the pile of rubber blanks to be loaded. The height adjustment assembly 4 includes a sleeve 42 and a height adjustment rod 41 arranged vertically. The sleeve 42 is fixedly connected to the crossbar assembly 3 and slides on the height adjustment rod 41. The lower end of the height adjustment rod 41 is connected to the pressure bar 51. The middle part of the rod 51 is connected, and the lifting drive assembly 2 can drive the pressure rod 51 to move vertically, thereby pressing the rubber preform pile 6 to be loaded on the tray 1, and preventing the adjacent rubber preform piles 6 on the tray 1 from being torn apart due to adhesion during loading; the crossbar assembly 3 is set so that the middle part of the pressure rod 51 can be pressed against the middle position of the rubber preform pile 6 to be loaded, ensuring the uniformity of the force on the rubber preform pile 6 to be loaded; the lifting drive assembly 2 can be fixed on the ground next to the extruder equipment.

[0029] It should be noted that when there are at least three rubber blank piles 6 on the tray 1, the rubber blank piles 6 at the edges are loaded first; that is, in a row of rubber blank piles 6, the rubber blank piles 6 at the beginning or end of the row are loaded first. For example, see... Figure 1 The pallet 1 has three parallel rubber blank piles 6, namely the first rubber blank pile 61, the second rubber blank pile 62, and the third rubber blank pile 63. The first rubber blank pile 61 and the third rubber blank pile 63 are located at the edges of the pile. When loading the third rubber blank pile 63 first, the initial end 631 of the third rubber blank pile 63 is manually pulled onto the conveyor. At this time, the pressure bar 51 is used to press the second rubber blank pile 62 along the bending direction of the S-shaped stack of rubber blanks to prevent it from being torn apart. When the third rubber blank pile 63 is loaded and the second rubber blank pile 62 needs to be loaded, the pressure bar 51 is lifted from the second rubber blank pile 62 and then pressed against the first rubber blank pile 61. In this way, the rubber blank piles 6 are loaded sequentially in one direction. Of course, the first rubber stockpile 61 can be fed first, then the second rubber stockpile 62 can be fed, and finally the third rubber stockpile 63 can be fed.

[0030] Furthermore, the sleeve 42 is fixedly connected to the crossbar assembly 3 and slidably fitted onto the height adjusting rod 41, meaning the height adjusting rod 41 can slide vertically within the sleeve 42. To prevent the height adjusting rod 41 from rotating within the sleeve 42, the cross-sections of the height adjusting rod 41 and the sleeve 42 perpendicular to their length are rectangular or square. Additionally, at least one side of the height adjusting rod 41 has multiple first positioning holes 411, which are spaced apart along the length of the height adjusting rod 41, meaning each first positioning hole 411 is located at a different horizontal height. The sleeve 42 has a second positioning hole (not shown in the figure), and a positioning pin 43 is provided within the second positioning hole. The front end of the positioning pin 43 can pass through the second positioning hole and be inserted into the first positioning hole 411. When the front end of the positioning pin 43 passes through the second positioning hole and is inserted into the first positioning hole 411, the height adjustment rod 41 and the sleeve 42 are locked in position, thereby fixing the height adjustment rod 41 relative to the crossbar assembly 3. When the front end of the positioning pin 43 is pulled out from the first positioning hole 411, the lock between the height adjustment rod 41 and the sleeve 42 is released, and the height adjustment rod 41 can move in the vertical direction. When the height adjustment rod 41 moves to the required height, the front end of the positioning pin 43 is inserted into the corresponding first positioning hole 411.

[0031] Understandably, by inserting the front end of the positioning pin 43 into different first positioning holes 411, the horizontal height of the height adjustment rod 41 can be adjusted, thereby adjusting the horizontal height of the pressure rod 51. Since the driving stroke of the lifting drive assembly 2 is limited, the pressure rod 51 cannot provide downward pressure when the rubber stockpile is too high or too low. By setting a height adjustment assembly 4 between the pressure rod 51 and the crossbar assembly 3, the adjustment stroke of the height adjustment rod 41 can be superimposed on the driving stroke of the lifting drive assembly 2, increasing the range of vertical movement of the pressure rod 51. This allows the feeding auxiliary device to provide downward pressure for rubber stockpile piles with a wider height range. For example, when the height of the rubber stockpile is too high, the height adjustment rod 41 is adjusted upward to make the vertical distance between the pressure rod 51 and the crossbar assembly 3 closer, so that the pressure rod 51 can maintain a higher horizontal height when it is pressed down; when the height of the rubber stockpile is too low, the height adjustment rod 41 is adjusted downward to make the vertical distance between the pressure rod 51 and the crossbar assembly 3 farther, so that the pressure rod 51 can maintain a lower horizontal height when it is pressed down.

[0032] In this embodiment, multiple first positioning holes 411 are opened on both the left and right sides of the height adjustment rod 41, and second positioning holes are also opened on the corresponding sides of the sleeve 42, so that the two positioning pins 43 respectively position the height adjustment rod 41 and the sleeve 42 from both sides of the sleeve 42, ensuring the stability of their positioning.

[0033] The operation steps of the feeding auxiliary device in this embodiment are as follows: Step 01: Place multiple rubber blanks 6 adjacent to each other on pallet 1, and move pallet 1 below pressure bar 51. At this time, pallet 1 is exactly at the feed port of the conveyor.

[0034] Step 02: Control the lifting drive assembly 2 to drive the crossbar assembly 3 and the height adjustment assembly 4 to move upward, thereby moving the pressure bar 51 to the highest position.

[0035] Step 03: Adjust the horizontal height of the height adjustment rod 41 according to the horizontal height of the rubber blank pile 6 to be loaded, so that when the lifting drive component 2 is at the highest position of the stroke, the pressure rod 51 is above the rubber blank pile 6 to be loaded, and before the lifting drive component 2 is at the lowest position of the stroke, the pressure rod 51 can press tightly against the upper end surface of the rubber blank pile 6 to be loaded.

[0036] Step 04: Control the lifting drive assembly 2 to drive the crossbar assembly 3 and the height adjustment assembly 4 to move downward, thereby causing the pressure bar 51 to descend. The pressure bar 51 presses against the pile of rubber blanks 6 to be loaded on the fixed tray 1.

[0037] In summary, the feeding auxiliary device of this embodiment, by setting up a pallet and a lifting and movable pressure bar, allows multiple rubber blanks to be placed adjacent to each other on the pallet without being torn apart during feeding. This enables multiple rubber blanks to be placed close together and transported synchronously, reducing the floor space occupied by multiple rubber blanks and the amount of handling work, thereby improving the feeding efficiency of rubber blanks. Furthermore, by setting a height adjustment rod between the crossbar assembly and the pressure bar, the pressure bar can be adjusted horizontally along with the height adjustment rod. The lifting drive assembly and the height adjustment assembly work together to achieve the superposition and coordination of the lifting stroke generated by the lifting drive assembly and the lifting stroke generated by the height adjustment assembly, expanding the lifting range of the pressure bar and enabling it to press rubber blanks with large height differences, thus broadening its application scenarios.

[0038] In this embodiment, the lower end of the height adjustment rod 41 is rotatably connected to the middle part of the pressure rod 51, allowing the pressure rod 51 to rotate both horizontally and vertically. Specifically, the middle part of the pressure rod 51 can rotate horizontally about a vertically oriented axis and vertically about a horizontally oriented axis. This ensures that the pressure rod 51 can stably press and fix the upper surface of the rubber blank pile 6 to be loaded, regardless of its angle. Furthermore, since multiple rubber blank piles may be arranged side-by-side, the rotation angle of the pressure rod 51 can be adjusted when pressing the rubber blank pile 6 to be loaded, so that the length direction of the pressure rod 51 is perpendicular to the direction in which the multiple rubber blank piles are arranged side-by-side, preventing the pressure rod 51 from interfering with the rubber blank pile currently in use.

[0039] Furthermore, such as Figure 3 , Figure 5 , Figure 6and Figure 10 As shown, the height adjustment component 4 also includes a connector 44.

[0040] Connector 44 connects the height adjusting rod 41 and the pressure rod 51. The upper end of connector 44 forms a longitudinal shaft 441, which is rotatably connected to the lower end of the height adjusting rod 41. The lower end of connector 44 forms a transverse shaft 442, which is rotatably connected to the middle of the pressure rod 51. Specifically, rotating plates are rotatably fitted at both ends of the transverse shaft 442, and both rotating plates are fixedly connected to the pressure rod 51. Thus, the connector 44 allows the pressure rod 51 to rotate horizontally and vertically relative to the height adjusting rod 41.

[0041] In this embodiment, as Figure 3 , Figure 5 and Figure 9 As shown, the crossbar assembly 3 includes a first telescopic bar 31 and a second telescopic bar 32.

[0042] In detail, the first telescopic rod 31 is slidably sleeved on the second telescopic rod 32, allowing relative movement between the first telescopic rod 31 and the second telescopic rod 32 along the length direction, i.e., the second telescopic rod 32 can slide within the first telescopic rod 31. Preferably, the cross-sections of the first telescopic rod 31 and the second telescopic rod 32 perpendicular to the length direction are rectangular. This shape prevents relative rotation between the first telescopic rod 31 and the second telescopic rod 32, and also allows them to withstand greater vertical forces, ensuring that the first telescopic rod 31 and the second telescopic rod 32 do not bend or deform when the pressure rod 51 presses down on the rubber preform pile, thus guaranteeing the stability of the pressure rod 51 during pressing.

[0043] And, as Figures 3 to 5 As shown, one end of the first telescopic rod 31 is fixedly connected to the lifting drive assembly 2. Specifically, one end of the first telescopic rod 31 is fixed to the lifting drive assembly 2 by bolts and T-nuts. In order to improve the connection strength between the first telescopic rod 31 and the lifting drive assembly 2, multiple right-angled triangular fixing plates can be fixed between the first telescopic rod 31 and the lifting drive assembly 2. One right-angled side of the fixing plate is fixedly connected to the first telescopic rod 31, and the other right-angled side of the fixing plate is fixedly connected to the lifting drive assembly 2. One end of the second telescopic rod 32 is fixedly connected to the sleeve 42.

[0044] In addition, such as Figure 9As shown, an opening 311 is formed on one side of the first telescopic rod 31. The opening 311 is preferably located on the lower side of the first telescopic rod 31 to reduce its impact on the force-bearing capacity of the first telescopic rod 31. The length of the opening 311 extends along the length of the first telescopic rod 31. A third positioning hole (not shown in the figure) corresponding to the position of the opening 311 is formed on the second telescopic rod 32. A positioning screw 33 is provided in the third positioning hole. A flange is formed on the outer circumference of the positioning screw 33. When the positioning screw 33 passes through the opening 311 and is screwed into the third positioning hole, the flange presses against the first telescopic arms on both sides of the opening 311, thereby clamping and fixing the first telescopic rod 31 and the second telescopic rod 32. Alternatively, the opening 311 can be located on the left or right sides of the first telescopic rod 31, or on the upper side of the first telescopic rod 31.

[0045] Understandably, when the length of the crossbar assembly 3 needs to be adjusted, the positioning screw 33 is first loosened so that its flange is not tightly pressed against the first telescopic rod 31, allowing the second telescopic rod 32 to slide within the first telescopic rod 31, thus changing the length of the crossbar assembly 3. Once the crossbar assembly 3 is adjusted to the desired length, the positioning screw 33 is then tightened so that its flange presses against the first telescopic rod 31, thus fixing the first telescopic rod 31 and the second telescopic rod 32 relatively. This structural design allows the crossbar assembly 3 to be adjusted in length as needed, thereby meeting various application scenarios.

[0046] In addition, such as Figure 9 As shown, in order to ensure that the flange on the positioning screw 33 can stably compress the first telescopic rod 31 when the positioning screw 33 is tightened in the third positioning hole, a fixing block 34 can be fixed at the third positioning hole in the second telescopic rod 32. The fixing block 34 has a screw hole, and the screw hole and the third positioning hole are positioned correspondingly. When the front end of the positioning screw 33 is screwed into the third positioning hole, the front end of the positioning screw 33 also enters the screw hole. Since the contact area between the positioning screw 33 and the fixing block 34 is larger, the stability of the compressive force formed by the positioning screw 33 on the first telescopic rod 31 is ensured.

[0047] In other embodiments, the opening may be replaced by an elongated hole, the length of which extends along the length of the first telescopic rod.

[0048] In this embodiment, as Figure 1 , Figure 3 , Figures 5 to 7 As shown, the lifting drive assembly 2 includes a base 21, a lifting seat 22, and a drive source 23.

[0049] The lifting seat 22 is mounted on the base 21. The drive source is located between the lifting seat 22 and the base 21. The drive source is used to drive the lifting seat 22 to move vertically on the base 21. The lifting seat 22 is fixedly connected to the crossbar assembly 3, specifically to the first telescopic rod 31.

[0050] In addition, both the base 21 and the lifting seat 22 are cylindrical. The lifting seat 22 is slidably sleeved on the base 21 and can rotate circumferentially relative to the base 21. This facilitates the rotation of the crossbar assembly 3 to the desired position as needed, increasing the versatility of the feeding auxiliary device's application. For example, by placing the feeding auxiliary device between two extruders, the orientation of the crossbar assembly 3 can be controlled as needed to assist one side of the extruder, thereby enabling the same feeding auxiliary device to assist two or more extruders.

[0051] And, as Figure 7 As shown, the lifting drive assembly 2 also includes a graphite copper sleeve 28.

[0052] The graphite copper sleeve 28 is disposed between the base 21 and the lifting seat 22. The graphite copper sleeve 28 is fixed on the base 21. The graphite copper sleeve 28 can reduce the friction between the base 21 and the lifting seat 22, so that the lifting seat 22 can smoothly slide vertically and rotate on the base 21.

[0053] In addition, the drive source includes cylinder 231 and air supply unit 232. The air supply unit 232 can be an air tank or an air compressor.

[0054] like Figure 7 and Figure 11 As shown, the air supply unit 232 provides driving gas to the cylinder 231. The cylinder body of the cylinder 231 is located inside the base 21 and is fixedly connected to the base 21 via the mounting bracket 24. The piston rod of the cylinder 231 is located inside the lifting seat 22 and is connected to the lifting seat 22. In this way, the cylinder 231 is hidden between the lifting seat 22 and the base 21, which can prevent external interference with the normal operation of the cylinder 231.

[0055] Understandably, cylinders are simple in structure, easy to maintain, and unaffected by harsh environments such as high temperature, dust, and humidity. Compressed air is readily available, which can reduce the manufacturing and operating costs of feeding auxiliary devices. Moreover, the compressibility of gas gives cylinders a natural buffering capacity during operation, while also providing cushioning when the pressure rod contacts the rubber blank pile.

[0056] Furthermore, such as Figure 11 As shown, the drive source also includes a first one-way throttle valve 233, a second one-way throttle valve 236, a pressure regulating valve 235, a handle valve 234, and a filter pressure reducing valve 237.

[0057] The lower air port on cylinder 231 is connected to the first outlet of handle valve 234 via a first one-way throttle valve 233. The upper air port on cylinder 231 is connected to the second air outlet of handle valve 234 via a pressure regulating valve 235 and a second one-way throttle valve 236. The air inlet of handle valve 234 is connected to air supply unit 232 via a filter pressure reducing valve 237. Handle valve 234 can be a rotary handle valve for easier operation. Figure 3 and Figure 5 As shown, the handle valve 234 can be set on the first telescopic rod 31 to further improve the convenience of the control operation of the feeding auxiliary device. Based on the structural setting of the crossbar assembly 3, the handle valve 234 set on the first telescopic rod 31 will not interfere with the horizontal sliding of the second telescopic rod 32.

[0058] When the cylinder 231 needs to drive the lifting seat 22 to move the pressure rod 51 upward, the handle valve 234 is adjusted so that its inlet is connected to the first outlet and its second outlet is connected to its exhaust port. At this time, the driving gas supplied by the air supply unit 232 flows sequentially through the filter pressure reducing valve 237, the handle valve 234, and the first one-way throttle valve 233 to the lower cavity of the cylinder 231. Under the pressure, the piston rod of the cylinder 231 extends, lifting the lifting seat 22 upward. The gas in the upper cavity of the cylinder 231 then flows sequentially through the pressure regulating valve 235, the second one-way throttle valve 236, and the handle valve 234, finally exiting through the exhaust port of the handle valve 234. When the piston rod of the cylinder 231 reaches the top, the handle valve 234 is closed. During this process, the speed at which the piston rod of the cylinder 231 extends can be controlled by the first one-way throttle valve 233 and the second one-way throttle valve 236.

[0059] When the cylinder 231 needs to drive the lifting seat 22 to move the pressure rod 51 downward, so that the pressure rod 51 presses down on the rubber blank pile, the handle valve 234 is adjusted so that the air inlet of the handle valve 234 is connected to the second air outlet, and the first air outlet of the handle valve 234 is connected to the exhaust port of the handle valve 234. At this time, the driving gas provided by the air supply unit 232 flows to the upper cavity of the cylinder 231 through the filter pressure reducing valve 237, the handle valve 234, the second one-way throttle valve 236 and the pressure regulating valve 235 in sequence. Under the action of air pressure, the piston rod of the cylinder 231 retracts, pulling the lifting seat 22 downward, while the gas in the lower cavity of the cylinder 231 passes through the first one-way throttle valve 233 and the handle valve 234 in sequence, and is finally discharged from the exhaust port of the handle valve 234. When the pressure rod 51 is pressed down to the appropriate position, the handle valve 234 is closed. The retraction speed of the piston rod of the cylinder 231 can be controlled by the first one-way throttle valve 233 and the second one-way throttle valve 236. The retraction force of the piston rod of the cylinder 231 can be adjusted by the pressure regulating valve 235, thereby adjusting the downward pressure of the pressure rod 51 and ensuring the pressure of the pressure rod 51 on the rubber blank pile.

[0060] A filter pressure reducing valve 237 is installed between the air supply unit 232 and the handle valve 234 to purify the air source and stabilize the pressure, providing clean and constant-pressure compressed air to downstream pneumatic components.

[0061] In addition, such as Figure 8 As shown, the lifting drive assembly 2 also includes a fixed rod 25 and a joint bearing 27.

[0062] The fixing rod 25 is fixed to the upper end of the lifting seat 22, and the lower end of the fixing rod 25 is connected to a horizontally arranged rotating shaft 26. The piston rod of the cylinder 231 is connected to the rotating shaft 26 through a spherical plain bearing 27, that is, the spherical plain bearing 27 is rotatably sleeved on the rotating shaft 26. The spherical plain bearing 27 is a spherical sliding bearing, composed of an inner and outer spherical surface, capable of withstanding radial, axial, or combined loads, and possessing a self-aligning function. In this way, the piston rod of the cylinder 231 is connected to the lifting seat 22 through the spherical plain bearing 27 and the rotating shaft 26, which can compensate for installation deviations, absorb impact vibrations, allow the cylinder 231 to operate stably under complex working conditions, and reduce wear on the piston rod of the cylinder 231 during operation.

[0063] In this embodiment, as Figure 3 and Figure 5 As shown, the lever assembly 5 also includes an operating handle 52.

[0064] An operating handle 52 is provided on the upper end face of the pressure rod 51. The operating handle 52 can be n-shaped, making it convenient for the operator to grip the pressure rod 51, thereby facilitating the adjustment of the rotation angle and vertical movement height of the pressure rod 51. In this embodiment, only one operating handle 52 is provided, located on the pressure rod 51 on one side of the height adjustment rod 41.

[0065] Of course, there can also be two operating handles 52, with the two operating handles 52 respectively located on the pressure rods 51 on both sides of the height adjustment rod 41.

[0066] The above description is merely a specific embodiment of this utility model. Under the teachings of this utility model, those skilled in the art can make other improvements or modifications based on the above embodiments. Those skilled in the art should understand that the above specific description is only to better explain the purpose of this utility model, and the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A feeding auxiliary device for rubber blanks, characterized in that, The feeding auxiliary device includes a tray and a pressing mechanism; The tray is used to support multiple adjacent stacks of rubber blanks; the pressing mechanism includes a lifting drive assembly, a crossbar assembly, a height adjustment assembly, and a pressure bar assembly; The crossbar assembly is fixedly connected between the lifting drive assembly and the height adjustment assembly. The lifting drive assembly is used to drive the crossbar assembly to move vertically. The pressure bar assembly includes a pressure bar, which is horizontally positioned and used to press down on the upper surface of the pile of rubber blanks to be loaded. The height adjustment assembly includes a sleeve and a vertically positioned height adjustment rod. The lower end of the height adjustment rod is connected to the middle of the pressure bar. The sleeve is fixedly connected to the crossbar assembly and slidably fitted onto the height adjustment rod. At least one side of the height adjustment rod has a plurality of first positioning holes, which are spaced apart along the length of the height adjustment rod. The sleeve has a second positioning hole, and a positioning pin is provided in the second positioning hole. The front end of the positioning pin can pass through the second positioning hole and be inserted into the first positioning hole.

2. The feeding auxiliary device for rubber blanks according to claim 1, characterized in that, The lower end of the height adjustment rod is rotatably connected to the middle part of the pressure rod, so that the pressure rod can rotate in both the horizontal and vertical directions.

3. The feeding auxiliary device for rubber blanks according to claim 2, characterized in that, The height adjustment assembly also includes a connector; The connector is connected between the height adjusting rod and the pressure rod. The upper end of the connector has a longitudinal shaft, and the connector is rotatably connected to the lower end of the height adjusting rod through the longitudinal shaft. The lower end of the connector has a transverse shaft, and the connector is rotatably connected to the middle part of the pressure rod through the transverse shaft.

4. The feeding auxiliary device for rubber blanks according to claim 1, characterized in that, The crossbar assembly includes a first telescopic bar and a second telescopic bar; The first telescopic rod is slidably sleeved on the second telescopic rod, allowing the first and second telescopic rods to move relative to each other along their length. One end of the first telescopic rod is fixedly connected to the lifting drive assembly, and one end of the second telescopic rod is fixedly connected to the sleeve. An opening is formed on one side of the first telescopic rod, and the length direction of the opening extends along the length direction of the first telescopic rod. A third positioning hole corresponding to the position of the opening is formed on the second telescopic rod. A positioning screw is provided in the third positioning hole, and a flange is formed on the outer circumference of the positioning screw. When the positioning screw passes through the opening and is screwed into the third positioning hole, the flange presses against the first telescopic rod on both sides of the opening.

5. The feeding auxiliary device for rubber blanks according to claim 1, characterized in that, The lifting drive assembly includes a base, a lifting seat, and a drive source; The drive source is located between the lifting seat and the base, and is used to drive the lifting seat to move vertically on the base. The lifting seat is fixedly connected to the crossbar assembly. Both the base and the lifting seat are cylindrical. The lifting seat is slidably fitted onto the base and can rotate circumferentially relative to the base.

6. The feeding auxiliary device for rubber blanks according to claim 5, characterized in that, The drive source includes a cylinder and an air supply unit; The air supply unit is used to provide driving gas to the cylinder. The cylinder body is located inside the base and is fixedly connected to the base via a mounting seat. The piston rod of the cylinder is connected to the lifting seat.

7. The feeding auxiliary device for rubber blanks according to claim 6, characterized in that, The drive source also includes a first one-way throttle valve, a second one-way throttle valve, a pressure regulating valve, a handle valve, and a filter pressure reducing valve; The lower air port on the cylinder is connected to the first outlet of the handle valve through the first one-way throttle valve, the upper air port on the cylinder is connected to the second air outlet of the handle valve through the pressure regulating valve and the second one-way throttle valve in sequence, and the air inlet of the handle valve is connected to the air supply unit through the filter pressure reducing valve.

8. The feeding auxiliary device for rubber blanks according to claim 6, characterized in that, The lifting drive assembly also includes a fixed rod and a joint bearing; The fixing rod is fixed to the upper end of the lifting seat, and the lower end of the fixing rod is connected to a horizontally arranged rotating shaft. The piston rod of the cylinder is connected to the rotating shaft through the spherical bearing.

9. The feeding auxiliary device for rubber blanks according to claim 5, characterized in that, The lifting drive assembly also includes a graphite copper sleeve; The graphite copper sleeve is disposed between the base and the lifting seat.

10. The feeding auxiliary device for rubber blanks according to any one of claims 1 to 9, characterized in that, The lever assembly also includes an operating handle; The operating handle is fixed to the upper end face of the pressure rod.

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