Connecting rod safety device and machining equipment

Abstract

The utility model discloses a connecting rod safety device and machining equipment, and the connecting rod safety device comprises a fixing part which comprises a rack, a first mounting seat, a second mounting seat and a third mounting seat; the pressing plate and the rack are arranged at an interval; the pressing plate is movably connected with the first mounting seat through a pair of parallel connecting rods; a first connecting end of the telescopic driving mechanism is hinged to the second mounting seat; two ends of the first connecting rod are respectively hinged to the third mounting seat and the second connecting end of the telescopic driving mechanism; two ends of the second connecting rod are respectively hinged with a second connecting end of the telescopic driving mechanism and the pressing plate; the ejection cam is arranged on the side, away from the fixing piece, of the pressing plate and used for ejecting and supporting an ejection mechanism of the machining equipment. When the mold is opened unsuccessfully, the telescopic driving mechanism shrinks to drive the first connecting rod and the second connecting rod to bend and swing, and the distance between the cam and the mounting surface is reduced, namely the distance relative to the ejection mechanism is increased, so that the ejection action of the mold is avoided, and the mold and parts of a machine are protected quickly and timely.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a connecting rod safety device and processing equipment. Background Art

[0002] With the development of the economy, domestic large-scale beverage companies have a strong demand for high-speed, efficient, and highly stable molding production equipment production lines. The existing injection molding process has become increasingly mature. For products with complex shapes, thick walls, and large sizes, the injection molding process still has its own advantages. For products with simple shapes and thin walls, the advantages of the compression molding process are reflected. Through the rotating circulation method, multiple single-structure molds are arranged in a circle, and it is relatively simple to replace the mold in the later stage. Compared with injection molding, its operating temperature is lower, so the energy consumption is relatively lower, and there is no injection port, and the product size and appearance are better, so the application scenarios of the compression molding process are increasing.

[0003] As for the multi-cavity compression molding process, since the molds are arranged on the circumference of the turntable and a single mold needs to be opened and closed, the specific process is as follows: the main turntable rotates with multiple molds. At a specific position, the molds need to be quickly closed while the turntable rotates. After the rapid closure, the upper and lower molds need to provide a large relative pressure to promote the rapid molding of the molded products in the molds and rapid cooling at the same time. At a specific position, the molds are opened in sequence. At this time, the molded parts are attached to the upper mold. At this time, an ejection device is required to eject the parts of the upper mold and hand over the parts to the second rotating device. That is, at this time, the molded molded products are unloaded from the mold in sequence and the molten particles are loaded into the mold at the same time. Under normal operation, the existing design is to design an ejection device on the upper mold, install bearings on the ejection device, and fix a cam track on the corresponding frame. The ejection function of the mold upper mold is realized by the cam track and the ejection device. However, after the machine was actually running in the customer's factory for many years, it was found that the machine also had some special conditions. If there was a problem with the internal parts of the machine or the hydraulic system, it might cause the mold to fail to open. At this time, if the upper mold still operated according to normal logic, the upper mold ejection mechanism would be ejected quickly under the action of the cam guide rail, which would cause interference and collision between machine parts and molds, thus causing damage to mold parts and machine parts. Therefore, how to quickly suppress ejection in special emergency situations to ensure that the machine and mold parts are not damaged is an urgent problem to be solved. Summary of the invention

[0004] The first object of the utility model is to provide a connecting rod safety device to solve the problems raised by the background technology.

[0005] The second purpose of the utility model is to provide a processing equipment.

[0006] To achieve the first purpose, the utility model provides a connecting rod safety device, which is applied to processing equipment. The connecting rod safety device includes:

[0007] A fixing member, the fixing member comprising a frame, a first mounting seat, a second mounting seat and a third mounting seat, the frame having a mounting surface, the first mounting seat, the second mounting seat and the third mounting seat being fixedly mounted on the mounting surface in sequence;

[0008] A pressing plate is spaced apart from the frame; the pressing plate is movably connected to the first mounting seat via a parallel connecting rod; the pressing plate, the first mounting seat and a plurality of parallel connecting rods constitute a parallel connecting rod mechanism;

[0009] A telescopic driving mechanism, the telescopic driving mechanism having a first connecting end and a second connecting end arranged opposite to each other, wherein the first connecting end is hingedly connected to the second mounting seat;

[0010] A first connecting rod, one end of which is hinged to the third mounting seat, and the other end of which is hinged to the second connecting end of the telescopic driving mechanism;

[0011] a second connecting rod, one end of which is hinged to the second connecting end of the telescopic driving mechanism, and the other end of which is hinged to the pressing plate;

[0012] An ejection cam, which is arranged on a side of the pressing plate away from the fixing member and is used to support an ejection mechanism of the processing equipment;

[0013] The telescopic drive mechanism has an ejection state and a retracted state. It is defined that when the telescopic drive mechanism is in the ejection state, the distance between the ejection cam and the mounting surface is a first distance, and when the telescopic drive mechanism is in the retracted state, the distance between the ejection cam and the mounting surface is a second distance, and the first distance is greater than the second distance.

[0014] As a preferred solution, when the telescopic drive mechanism is in an ejection state, the extension direction of the first connecting rod and the extension direction of the second connecting rod are collinear.

[0015] As a preferred embodiment, it also includes a limit member, which is connected to the mounting surface and is located on the side of the first mounting seat away from the second mounting seat; the limit member is used to limit the movement of the pressure plate toward the side close to the limit member when the telescopic drive mechanism is in the ejection state.

[0016] As a preferred embodiment, the limiting member has a first extension portion and a second extension portion; the first extension portion is connected to the mounting surface, and the second extension portion is bent and extended laterally from one end of the first extension portion away from the mounting surface; a notch matching the second extension portion is provided at the end of the pressure plate.

[0017] As a preferred solution, the telescopic drive mechanism is a cylinder structure.

[0018] To achieve the second purpose, the utility model provides a processing equipment, including an upper die, an ejection device and the connecting rod safety device as described above; the ejection device is arranged between the upper die and the connecting rod safety device.

[0019] As a preferred solution, the ejection device is provided with a bearing, and the bearing is used to abut against the ejection cam.

[0020] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0021] In the utility model, when the mold opening of the processing equipment fails, the telescopic drive mechanism can be switched from the ejection state to the retracted state, that is, the length of the telescopic drive mechanism becomes smaller, driving the first connecting rod and the second connecting rod to bend and swing, so that the ejection cam is offset toward the side close to the frame. In this way, the distance between the cam and the mounting surface is reduced, that is, the distance relative to the ejection mechanism becomes larger, thereby avoiding the ejection action of the mold, and quickly and timely protecting the mold and machine parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a front view of the connecting rod safety device when the telescopic driving mechanism is in the ejection state in the utility model;

[0024] Figure 2 It is a three-dimensional diagram of the connecting rod safety device when the telescopic drive mechanism is in the ejection state;

[0025] Figure 3 It is a front view of the connecting rod safety device when the telescopic drive mechanism is in a retracted state in the utility model;

[0026] Figure 4 is a three-dimensional diagram of the connecting rod safety device when the telescopic drive mechanism is in a retracted state;

[0027] Description of Figure Numbers:

[0028] 1. Limiting member; 11. First extension portion; 12. Second extension portion; 2. Fixing member; 21. First mounting seat; 22. Second mounting seat; 23. Third mounting seat; 24. Frame; 3. Fixing surface; 4. Telescopic drive mechanism; 41. First connecting end; 42. Second connecting end; 5. First connecting rod; 6. Second connecting rod; 7. Pressing plate; 71. Notch; 8. Ejection cam; 9. Parallel connecting rod; 100. Ejection device; 101. Bearing. DETAILED DESCRIPTION

[0029] In order to facilitate a better understanding of the purpose, structure, features and efficacy of the utility model, the utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that the features shown in the figures are not necessarily drawn to scale. In addition, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0030] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by persons with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", "front", "back" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In addition, in the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0031] See also Figure 1-2, this embodiment provides a connecting rod safety device, which is applied to processing equipment. The connecting rod safety device includes: a fixing member 2, the fixing member 2 includes a frame 24, a first mounting seat 21, a second mounting seat 22 and a third mounting seat 23, the frame 24 has a mounting surface, the first mounting seat 21, the second mounting seat 22 and the third mounting seat 23 are fixed on the mounting surface in sequence; a pressing plate 7, which is spaced apart from the frame; the pressing plate 7 is movably connected to the first mounting seat 21 through a pair of parallel connecting rods 9; the pressing plate 7, the first mounting seat 21 and the two parallel connecting rods 9 constitute a parallel four-bar linkage; a telescopic driving mechanism 4, the telescopic driving mechanism 4 has a first connecting end 41 and a second connecting end 42 which are arranged opposite to each other, and the first connecting end 41 is hinged to the second mounting seat 22; a first connecting rod 5, one end of the first connecting rod 5 is hinged to the The third mounting seat 23, the other end of the first connecting rod 5 is hinged to the second connecting end 42 of the telescopic driving mechanism 4; the second connecting rod 6, one end of the second connecting rod 6 is hinged to the second connecting end 42 of the telescopic driving mechanism 4, and the other end of the second connecting rod 6 is hinged to the pressing plate 7; the ejection cam 8, the ejection cam 8 is arranged on the side of the pressing plate 7 away from the fixing member 2, and is used to support the ejection mechanism of the processing equipment; the telescopic driving mechanism 4 has an ejection state and a contraction state, and it is defined that when the telescopic driving mechanism 4 is in the ejection state, the distance between the ejection cam 8 and the mounting surface is a first spacing, and when the telescopic driving mechanism 4 is in the contraction state, the distance between the ejection cam 8 and the mounting surface is a second spacing, and the first spacing is greater than the second spacing. In other words, when the telescopic driving mechanism contracts, the distance between the ejection cam 8 and the mounting surface becomes smaller.

[0032] When the mold opening of the processing equipment fails, the telescopic drive mechanism 4 can be switched from the ejection state to the contraction state, that is, the length of the telescopic drive mechanism 4 becomes smaller, driving the first connecting rod 5 and the second connecting rod 6 to bend and swing, so that the ejection cam 8 is offset to the side close to the frame, so that the distance between the ejection cam 8 and the mounting surface is reduced, that is, the distance relative to the ejection mechanism becomes larger, that is, the ejection action of the mold is avoided, and the mold and machine parts are quickly and timely protected. Of course, in other embodiments, more connecting rods can also be set between the pressing plate 7 and the first mounting seat 21.

[0033] like Figure 1-2 When the telescopic drive mechanism 4 is in the ejection state, the extension direction of the first connecting rod 5 is in line with the extension direction of the second connecting rod 6. The first connecting rod 5 and the third mounting seat 23 form a first rotation pair; the first connecting rod 5, the second connecting end 42 and the second connecting rod 6 are connected to form a second rotation pair; the second connecting rod 6 and the pressure plate 7 form a third rotation pair. Figure 1As shown, when the telescopic drive mechanism 4 is in the ejection state, that is, the ejection mechanism is in the normal state, the first rotation pair, the second rotation pair and the third rotation pair are in the same straight line. At this time, the RRRⅡ level rod group composed of the telescopic drive mechanism 4, the first connecting rod 5, the second connecting rod 6, the pressure plate 7 and the parallel connecting rod 9 is in the dead point position.

[0034] like Figure 1-4 In a preferred embodiment, the telescopic drive mechanism 4 further includes a limiter 1, which is connected to the mounting surface and is located on the side of the first mounting seat 21 away from the second mounting seat 22; the limiter 1 is used to limit the movement of the pressure plate 7 toward the side close to the limiter 1 when the telescopic drive mechanism 4 is in the ejection state. That is, when the ejection mechanism is in a normal state, the pressure plate 7 is firmly pressed on the limiter 1 to obtain greater rigidity, so as to prevent the angle of the first connecting rod 5 and the second connecting rod 6 from changing so that the distance between the ejection cam 8 and the mounting surface is reduced. Taking the mold arranged below the ejection cam 8 as an example, when the processing equipment is running and the product below is ejected, the ejection cam 8 is subjected to an upward reaction force. At this time, the RRRⅡ level rod group at the dead point position makes the connecting rod safety device as a whole obtain greater rigidity, and can be continuously and stably in a normal working state, ensuring the rapid and stable operation of the lower ejection cam 8, and providing stable and reliable support for the ejection action of the mold under normal working state.

[0035] like Figure 1-4 In a preferred embodiment, the limiting member 1 has a first extension portion 11 and a second extension portion 12; the first extension portion 11 is connected to the mounting surface, and the second extension portion 12 is bent and extended laterally from one end of the first extension portion 11 away from the mounting surface; a notch 71 matching the second extension portion 12 is provided at the end of the pressing plate 7. The first extension portion 11 and the second extension portion 12 can limit the movement of the pressing plate 7 from two different directions, which is conducive to improving the overall rigidity of the connecting rod safety device.

[0036] like Figure 1-4 In a preferred embodiment, the telescopic drive mechanism 4 is a cylinder structure. Of course, in other embodiments, the telescopic drive mechanism 4 can also be a cylinder, a linear motor or other structures.

[0037] Please refer to Figure 1 and Figure 3 The utility model also provides a processing device, including an upper mold, an ejector device 100 and the aforementioned connecting rod safety device; the ejector device is arranged between the upper mold and the connecting rod safety device. The ejector device is provided with a support rod and a bearing 101. The bearing 101 is arranged at the end of the support rod for abutting the ejector cam 8. The provision of the bearing can reduce the wear on the ejector cam and extend the service life of the machine. Of course, in other embodiments, the bearing can also be replaced by other roller structures.

[0038] In this embodiment, the frame of the connecting rod safety device is arranged on a fixed surface 3 of the processing equipment, and the connecting rod safety device is arranged above the ejection device. The processing equipment is provided with a photoelectric sensor for detecting the opening of the machine mold, and the photoelectric sensor is used to detect the movement distance of the piston of the mold opening cylinder. When the movement distance of the piston is less than the set value, it is determined that the mold opening fails. When the equipment is operating normally, the telescopic drive mechanism 4 is in the ejection state, that is, the connecting rod safety device is in a normal state. During the rotation of the turntable, the ejection device contacts the ejection cam to perform the ejection action of the mold. When the sensor detects that the machine mold fails to open the mold, the connecting rod safety device triggers the safety mechanism, and the telescopic drive mechanism 4 is quickly retracted, that is, the length of the telescopic drive mechanism 4 is shortened, thereby driving the first connecting rod 5 and the second connecting rod 6 to bend, and the dead point state of the RRRⅡ level rod group is destroyed, and at the same time, the left parallel connecting rod is driven to swing to the right, so that the pressure plate is translated to the right and rises to a certain height, and leaves the limiter 1, thereby driving the ejection cam 8 to rise. Finally, the quick action of the connecting rod safety device prevents the ejection cam 8 from contacting the bearing 101 of the ejection device during the rotation of the turntable, that is, prevents the ejection device from performing the ejection action of the mold, and quickly and timely protects the mold and machine parts.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connecting rod safety device, applied to processing equipment, characterized in that: include: A fixing member, the fixing member comprising a frame, a first mounting seat, a second mounting seat and a third mounting seat, the frame having a mounting surface, the first mounting seat, the second mounting seat and the third mounting seat being fixedly mounted on the mounting surface in sequence; A pressing plate is spaced apart from the frame; the pressing plate is movably connected to the first mounting seat via a parallel connecting rod; the pressing plate, the first mounting seat and a plurality of parallel connecting rods constitute a parallel connecting rod mechanism; A telescopic driving mechanism, the telescopic driving mechanism having a first connecting end and a second connecting end arranged opposite to each other, wherein the first connecting end is hingedly connected to the second mounting seat; A first connecting rod, one end of which is hinged to the third mounting seat, and the other end of which is hinged to the second connecting end of the telescopic driving mechanism; a second connecting rod, one end of which is hinged to the second connecting end of the telescopic driving mechanism, and the other end of which is hinged to the pressing plate; An ejection cam, which is arranged on a side of the pressing plate away from the fixing member and is used to support an ejection mechanism of the processing equipment; The telescopic drive mechanism has an ejection state and a retracted state. It is defined that when the telescopic drive mechanism is in the ejection state, the distance between the ejection cam and the mounting surface is a first distance, and when the telescopic drive mechanism is in the retracted state, the distance between the ejection cam and the mounting surface is a second distance, and the first distance is greater than the second distance.

2. The connecting rod safety device according to claim 1, characterized in that: When the telescopic driving mechanism is in an ejection state, an extension direction of the first connecting rod and an extension direction of the second connecting rod are collinear.

3. The connecting rod safety device according to claim 2, characterized in that: It also includes a limiting member, which is connected to the mounting surface and is located on a side of the first mounting seat away from the second mounting seat; the limiting member is used to limit the movement of the pressure plate toward the side close to the limiting member when the telescopic drive mechanism is in an ejection state.

4. The connecting rod safety device according to claim 3, characterized in that: The limiting member has a first extension portion and a second extension portion; the first extension portion is connected to the mounting surface, and the second extension portion is bent and extended laterally from one end of the first extension portion away from the mounting surface; a notch matching the second extension portion is provided at the end of the pressure plate.

5. The connecting rod safety device according to claim 1, characterized in that: The telescopic driving mechanism is a cylinder structure.

6. A processing equipment, characterized in that: It comprises an upper die, an ejection device and a connecting rod safety device as described in any one of claims 1 to 5; the ejection device is arranged between the upper die and the connecting rod safety device.

7. A processing equipment according to claim 6, characterized in that: The ejection device is provided with a bearing, and the bearing is used to abut against the ejection cam.

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