Multi-stroke heating plate driving device

Abstract

The utility model discloses a multi-stroke heating plate driving device, which relates to the field of medicine packaging equipment and is particularly used for controlling an execution assembly to move linearly. The multi-stroke heating plate driving device comprises a linear guide rail pair for guaranteeing the feeding straightness of an execution assembly, and the execution assembly is fixedly connected with the moving end of the linear guide rail pair; the telescopic rod group is used for driving the execution assembly to feed and has at least two different displacement strokes; according to the multi-stroke type heating plate driving device, the multi-stroke telescopic rod set is adopted, the production efficiency can be improved, a large distance can be formed between a hot plate and a plastic package welding position and between the hot plate and a conveying device in the mode that the first stroke and the second stroke are combined during shutdown waiting, and the situation that a plastic package container is damaged due to the fact that the hot plate is damaged is avoided. Particularly, the welding position and the conveying device are baked at high temperature for a long time, the telescopic rod set is simple in structure, and compared with a driving device of a servo system, the telescopic rod set has the advantages of being low in cost, easy to use and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical packaging equipment, and more specifically, to a multi-stroke heating plate driving device. Background Art

[0002] Infusion containers with plastic packaging generally refer to infusion soft bags and infusion plastic bottles, which are the main packaging methods for intravenous infusion preparations in China at present.

[0003] During the production process, after the infusion containers with plastic packaging are filled, sealing is a necessary and crucial process. The way to achieve sealing is to drive the heating plate between the interface of the infusion container and the sealing cap, and heat the interface of the infusion container with plastic packaging and the sealing cap simultaneously. After heating is completed, the heating plate is removed from between the interface of the infusion container and the sealing cap. At the same time, the sealing component welds the sealing cap to the interface of the infusion container with plastic packaging.

[0004] Therefore, the heating device and the sealing device are important components on the production line of infusion containers with plastic packaging, and their function is to hermetically connect the sealing cap of the infusion container to the interface after the infusion container with plastic packaging is filled.

[0005] However, in the actual production process, even after the heating plate is removed from the plastic packaging welding position, its distance from the welding position is still relatively close. When the equipment stops and waits, the workpieces at this position, that is, the plastic packaging containers, and the conveying device for conveying the plastic packaging are baked by its high temperature for a long time, resulting in defects such as damage to the plastic packaging containers and affecting the accuracy of the conveying device.

[0006] To solve the above problems, the driving principles of the heating devices in the existing plastic packaging infusion production lines are mainly divided into two types: One is as Figure 1 shown, an independent long-stroke cylinder 8 is used in cooperation with a linear guide rail to drive the heating device to complete the entry and exit of the heating plate. Although this method has a simple structure, low cost, and is convenient for operation and maintenance, its biggest disadvantage is that the cylinder has a long stroke and a long action cycle time, which affects the efficiency of the entire production line.

[0007] Another driving method for the heating device is to use a servo motor to drive a linear drive system (such as an electric cylinder), and cooperate with a linear guide rail to drive the heating device to complete the entry and exit of the heating sheet. The disadvantages of this driving method are: Although the positioning is accurate, the cost is relatively high, the failure rate is relatively high, the control system is relatively complex, the control program requires professional technicians to debug and modify, and it is not convenient for troubleshooting and maintenance replacement.

[0008] In summary, how to provide a heating plate driving device with a simple structure, high efficiency, low production and use costs, convenient maintenance, and low failure rate is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0009] In view of the above, the purpose of the present utility model is to provide a multi-stroke heating plate driving device, which uses a telescopic rod group with multiple strokes to drive the heating plate. During the normal encapsulation and welding process, only its first stroke is utilized. The first stroke is less than the total stroke of the telescopic rod group, so the single-action cycle time of the heating plate is shorter, which helps to improve production efficiency. When waiting for shutdown, the first stroke plus the second stroke can be used to make the heating plate have a large distance from the plastic packaging welding position and the conveying device, avoiding the plastic packaging and the conveying device from being baked at high temperature for a long time. Moreover, by using the telescopic rod group, its own structure is simple, and it has the advantages of low production cost and simple use compared with the servo system.

[0010] In order to achieve the above purpose, the present utility model provides the following technical solutions:

[0011] A multi-stroke heating plate driving device for controlling the linear movement of an execution component, comprising:

[0012] A linear guide pair for ensuring the linearity of the feed of the execution component, and the execution component is fixedly connected to the moving end of the linear guide pair;

[0013] A telescopic rod group for driving the execution component to feed, and the telescopic rod group has at least two different displacement strokes.

[0014] Preferably, the telescopic rod group includes:

[0015] A first telescopic rod, and the piston rod of the first telescopic rod is fixedly connected to the execution component relatively;

[0016] A second telescopic rod, and the piston rod of the second telescopic rod is fixedly connected to the cylinder body of the first telescopic rod relatively, and the cylinder body of the second telescopic rod is fixedly installed absolutely.

[0017] Preferably, the first telescopic rod and the second telescopic rod are arranged in a parallel and vertically staggered manner, and the cylinder body of the first telescopic rod and the piston rod of the second telescopic rod are fixedly connected by a telescopic rod fixing member.

[0018] Preferably, it further includes a limit block for limiting the maximum stroke of the piston rod of the first telescopic rod.

[0019] Preferably, the first telescopic rod is an adjustable telescopic rod.

[0020] Preferably, the second telescopic rod is a telescopic rod with a built-in guide rod.

[0021] Preferably, a fixing plate for fixedly connecting with the machine base is arranged on the cylinder body of the second telescopic rod.

[0022] Preferably, the telescopic rod group is a double-stroke telescopic rod.

[0023] Preferably, there are two sets of linear guide pairs, and the sliders in the two sets of linear guide pairs are fixedly connected to the same mounting plate, and the actuating assembly is fixedly connected to the mounting plate.

[0024] Preferably, there are two sets of linear guide pairs, and the sliders in the two sets of linear guide pairs are fixedly connected to the same connecting plate, and the moving end of the telescopic rod group is fixedly connected to the connecting plate.

[0025] The multi-stroke heating plate driving device provided by the present invention has at least the following effective effects compared with the prior art:

[0026] 1. By using a telescopic rod group with at least two different displacement strokes, the actuating assembly has at least three stroke end points, and the distances between the stroke end points are not equal. Taking one of them as the working position of the actuating assembly and the others as the working waiting positions, multiple working waiting positions with different distances from the working position can be obtained, thereby reducing the mutual interference between other components in the working position and the actuating assembly in the non-working state; and taking the working waiting position with the smallest distance as the common waiting position and the other working waiting positions as the standby waiting positions can reduce the time required for a single cycle of the actuating assembly, thereby improving the cycle efficiency of the actuating assembly;

[0027] 2. By using a telescopic rod group instead of a servo system, it has the advantages of simple structure and low production cost; its control method only needs to control the valve body in its oil circuit or gas circuit, with simple logic and low requirements for operators, and is suitable for on-site use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings according to the provided drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the design solution in the prior art;

[0030] Figure 2 It is a schematic structural diagram of the multi-stroke heating plate driving device provided by the present invention;

[0031] Figure 3 It is a top view of the multi-stroke heating plate driving device provided by the present invention.

[0032] Figures 1-3 In which:

[0033] 1. Execution component; 2. Installation plate; 3. Linear guide pair; 301. Slide block; 4. First telescopic rod; 5. Fixing part of telescopic rod; 6. Second telescopic rod; 7. Fixed plate; 8. Long-stroke cylinder; 9. Connecting plate. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The core of the present invention is to provide a multi-stroke heating plate driving device, which uses a telescopic rod group with multiple strokes to drive the heating plate. During the normal encapsulation and welding process, only its first stroke is used. The first stroke is less than the total stroke of the telescopic rod group, so the single-action cycle time of the heating plate is shorter, which helps to improve production efficiency. When waiting for shutdown, the first stroke plus the second stroke can be used to make the heating plate and the plastic packaging welding position and the conveying device have a large distance, avoiding the plastic packaging and the conveying device from being baked at high temperature for a long time. And using a telescopic rod group, its own structure is simple, and it has the advantages of low production cost and simple use compared with the servo system.

[0036] Please refer to Figure 2 and Figure 3 , Figure 2 which is a multi-stroke heating plate driving device for controlling the linear movement of the execution component 1, and is characterized by including:

[0037] A linear guide pair 3 for ensuring the straightness of the feed of the execution component 1, and the execution component 1 is fixedly connected to the moving end of the linear guide pair 3;

[0038] A telescopic rod group for driving the feed of the execution component 1, and the telescopic rod group has at least two different displacement strokes.

[0039] In use, the moving end of the actuating component 1 is fixedly connected to the moving end of the linear guide pair 3, or the moving end of the telescopic rod group is fixedly connected to the moving end of the linear guide pair 3, and the moving end of the telescopic rod group is fixedly connected to the actuating component 1, so as to ensure that the actuating component 1 has good motion stability, that is, the motion trajectory has good straightness, and after the actuating component 1 moves to the end of the stroke, there are no problems such as shaking and trembling; at the same time, the telescopic rod group has multiple strokes, and the lengths of the strokes are different. Among them, it can be set that the first stroke is used for the normal working stroke of the actuating component 1, and at least one of the remaining strokes is used for the actuating component 1 to stop and wait. The first stroke should be less than one of the strokes for stopping and waiting in the remaining strokes. During the working process of the actuating component 1, it only moves within the first stroke, and its motion end points are the two end points of the first stroke. Since the first stroke is smaller, the motion time of the actuating component 1 within the first stroke is shorter, which helps to reduce the cycle time of the actuating component 1 within the first stroke, that is, improve the work efficiency;

[0040] And the stroke for stopping in the remaining strokes is greater than the first stroke. When the device is in the stop and wait state, the actuating component 1 moves according to this stroke, so that the actuating component 1 can move away from its working position, thereby reducing the interference of the actuating component 1 to other workpieces or devices at the working position;

[0041] Taking the heating plate drive of the plastic packaging infusion container production line as an example, that is, the actuating component 1 is the heating plate. It contacts and heats the container interface and the sealing cap of the plastic packaging at the working position. After heating is completed, the heating plate is removed from the working position to perform the welding of the container interface and the sealing cap. After welding is completed, the heating plate moves to the working position again to heat the container interface and the sealing cap of the next group of plastic packaging, completing one cycle. During this process, the actuating component 1 only moves within the first stroke. Therefore, the length of the first stroke determines the length of this cycle. Further speaking, it affects the duration of this process; therefore, adopting a smaller first stroke can improve the work efficiency.

[0042] Among them, the telescopic rod group has at least two strokes. The two strokes have three stroke end points, namely the working end point, the working waiting end point, and the stop waiting end point. The three end points can meet the production requirements;

[0043] Similarly, in some embodiments, three strokes are adopted, having a working end point, a first working waiting end point, a second working waiting end point, and a stop waiting end point; or four strokes, five strokes or more strokes are adopted to obtain more working waiting end points.

[0044] In this embodiment, as Figure 2 shown, the telescopic rod group includes:

[0045] The first telescopic rod 4, the piston rod of the first telescopic rod 4 is fixedly connected to the actuating assembly 1 relatively;

[0046] The second telescopic rod 6, the piston rod of the second telescopic rod 6 is fixedly connected to the cylinder body of the first telescopic rod 4 relatively, the cylinder body of the second telescopic rod 6 is fixedly installed absolutely, in actual design, that is, the cylinder body of the second telescopic rod 6 is fixedly installed with the frame.

[0047] Using two groups of telescopic rods bundled together, three strokes can be obtained:

[0048] That is, when the first telescopic rod 4 moves, the first stroke is obtained;

[0049] When the second telescopic rod 6 moves, the second stroke is obtained;

[0050] When the first telescopic rod 4 and the second telescopic rod 6 move synchronously, the third stroke is obtained;

[0051] Specifically:

[0052] When both the first telescopic rod 4 and the second telescopic rod 6 are in the extended state, the actuating assembly 1 moves to the farthest end, that is, the working position, and this point is the working end point;

[0053] When only the first telescopic rod 4 contracts, the position where the actuating assembly 1 is located is the first working waiting end point;

[0054] When only the second telescopic rod 6 contracts, the position where the actuating assembly 1 is located is the second working waiting end point;

[0055] When both the first telescopic rod 4 and the second telescopic rod 6 contract, the position where the actuating assembly 1 is located is the stop waiting end point.

[0056] In actual use, generally, a design is adopted in which the stroke of the first telescopic rod 4 is shorter than that of the second telescopic rod 6, that is, the first stroke is less than the second stroke, and the third stroke is equal to the sum of the distances of the first stroke and the second stroke; during normal production, the actuating assembly 1 only moves within the first stroke, that is, only the first telescopic rod 4 moves, and the first working waiting end point is enabled. Only when stopping and waiting, will the first telescopic rod 4 and the second telescopic rod 6 be controlled to contract synchronously, that is, move within the third stroke, and the stop waiting end point is enabled; however, for some special situations, such as workpiece production line replacement, or temporarily using manual workpiece clamping, in order to avoid the heating plate scalding the operator or the workpiece, the form of separately contracting the second telescopic rod 6 can be adopted, that is, moving within the second stroke, and the second working waiting end point is enabled. The second working waiting end point has a larger distance between the first working waiting end point and the working end point, and can play an effect of avoiding scalding the operator or the workpiece;

[0057] Of course, in some embodiments, a design is also adopted in which the stroke distances of the first telescopic rod 4 and the second telescopic rod 6 are equal. In this design, the first working waiting end point and the second working waiting end point coincide, and the rest is the same as the above effect.

[0058] In this embodiment, as Figure 2 shown, the first telescopic rod 4 and the second telescopic rod 6 are arranged in a parallel and staggered manner up and down. The cylinder body of the first telescopic rod 4 and the piston rod of the second telescopic rod 6 are fixedly connected through a telescopic rod fixing member 5.

[0059] By adopting the staggered arrangement up and down, the front end of the piston rod of the second telescopic rod 6 is fixedly connected to the front end of the cylinder body of the first telescopic rod 4. When both the first telescopic rod 4 and the second telescopic rod 6 contract, their axial occupied length is smaller, which helps to miniaturize the overall device;

[0060] In some other embodiments, a coaxial arrangement of the first telescopic rod 4 and the second telescopic rod 6 is adopted, that is, the front end of the piston rod of the second telescopic rod 6 is fixedly connected to the tail end of the cylinder body of the first telescopic rod 4. Compared with the previous method, its radial occupied space is reduced, but the axial occupied space is increased, which is suitable for use in narrow and long scenarios.

[0061] At the same time, to ensure the accuracy of the working end point position, that is, to ensure that the execution component 1 can accurately reach the working end point after passing through the first stroke, that is, the heating plate and the container interface and the sealing cover of the plastic package have good coaxiality, the following design is adopted, that is, it also includes a limit block that limits the maximum stroke of the piston rod of the first telescopic rod 4. Through the design of the limit block, when the execution component 1 moves to the working end point, it can stop and the position is accurate;

[0062] At the same time, in some embodiments, the first telescopic rod 4 is an adjustable telescopic rod. By selecting a telescopic rod with a special structure to replace the limit block, the same purpose can be achieved. Among them, the adjustable telescopic rod is a prior art and will not be elaborated here.

[0063] At the same time, to ensure the accuracy of the movement of the telescopic rod group during the action process, the second telescopic rod 6 is a telescopic rod with a built-in guide rod, so that the end of its piston rod has a certain radial load-bearing capacity, that is, to avoid the decline of the movement accuracy caused by the influence of the gravity of the cylinder body of the first telescopic rod 4. Among them, the telescopic rod with a built-in guide rod is a prior art and will not be elaborated here.

[0064] In this embodiment, a fixing plate 7 for fixedly connecting with the machine base is arranged on the cylinder body of the second telescopic rod 6. In some embodiments, the fixing plate 7 is arranged at the middle position of the cylinder body of the second telescopic rod 6. During its assembly, it is easily restricted by the space inside the machine base and is difficult to install and fix.

[0065] Different from the design of the two sets of telescopic rods in the above embodiments, in some embodiments, the telescopic rod set is a double-stroke telescopic rod, that is, a double-stroke telescopic rod with three oil ports. By changing the inlet and outlet of different oil ports, the piston rod obtains two different strokes, and one of the strokes is greater than the other. The working end point, working waiting end point and shutdown waiting end point can also be obtained, and the structure is more compact. The double-stroke telescopic rod is a prior art, and its specific structure will not be described in detail here.

[0066] In some embodiments, to ensure the stability of the movement of the actuator assembly 1, the following scheme is adopted, as Figure 3 shown, there are two sets of linear guide pairs 3, and the sliders 301 in the two sets of linear guide pairs 3 are fixedly connected to the same mounting plate 2, and the actuator assembly 1 is fixedly connected to the mounting plate 2;

[0067] Through the two sets of parallel linear guide pairs 3, the movement accuracy of the actuator assembly 1 is effectively improved. And with the design of the mounting plate 2, the actuator assembly 1 is not directly connected to the slider 301, but is connected to the mounting plate 2, reducing the impact on the linear guide pair 3 when the actuator assembly 1 is replaced or repaired.

[0068] At the same time, there are two sets of linear guide pairs 3, and the sliders 301 in the two sets of linear guide pairs 3 are fixedly connected to the same connecting plate 9, and the moving end of the telescopic rod set is fixedly connected to the connecting plate 9; adding the connecting plate 9 enables the telescopic rod set to be connected to the slider 301 through the connecting plate 9, which can reduce the impact on the linear guide pair 3 when the telescopic rod set is replaced or repaired;

[0069] Or the sliders 301 in the two sets of linear guide pairs 3 are fixedly connected to the same mounting plate 2, and the mounting plate 2 is connected to the moving end of the telescopic rod set through the connecting plate 9, which should also be protected by this application.

[0070] In the above scheme, the first telescopic rod 4 and the second telescopic rod 6 are both preferably cylinders or oil cylinders.

[0071] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0072] The multi-stroke heating plate driving device provided by the present invention has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A multi-stroke heating plate driving device for controlling an actuator (1) to move linearly, characterized in that: include: A linear guide pair (3) for ensuring the feeding straightness of the actuator (1), the actuator (1) being fixedly connected to the moving end of the linear guide pair (3); A telescopic rod group drives the actuator (1) to feed, and the telescopic rod group has at least two different displacement strokes.

2. The multi-stroke heating plate driving device according to claim 1, characterized in that: The telescopic rod group comprises: A first telescopic rod (4), a piston rod of the first telescopic rod (4) being relatively fixedly connected to the actuator assembly (1); A second telescopic rod (6), the piston rod of the second telescopic rod (6) is relatively fixedly connected to the cylinder body of the first telescopic rod (4), and the cylinder body of the second telescopic rod (6) is absolutely fixedly installed.

3. The multi-stroke heating plate driving device according to claim 2, characterized in that: The first telescopic rod (4) and the second telescopic rod (6) are arranged in parallel and staggered up and down, and the cylinder body of the first telescopic rod (4) and the piston rod of the second telescopic rod (6) are fixedly connected via a telescopic rod fixing member (5).

4. The multi-stroke heating plate driving device according to claim 2, characterized in that: It also comprises a limit block for limiting the maximum travel of the piston rod of the first telescopic rod (4).

5. The multi-stroke heating plate driving device according to claim 2, characterized in that: The first telescopic rod (4) is an adjustable telescopic rod.

6. The multi-stroke heating plate driving device according to claim 2, characterized in that: The second telescopic rod (6) is a telescopic rod with a guide rod.

7. The multi-stroke heating plate driving device according to claim 6, characterized in that: The cylinder body of the second telescopic rod (6) is provided with a fixing plate (7) for fixedly connecting to the machine base.

8. The multi-stroke heating plate driving device according to claim 1, characterized in that: The telescopic rod set is a double-stroke telescopic rod.

9. The multi-stroke heating plate driving device according to any one of claims 1 to 8, characterized in that: There are two groups of linear guide rail pairs (3), and the sliders (301) in the two groups of linear guide rail pairs (3) are fixedly connected to the same mounting plate (2), and the actuator component (1) is fixedly connected to the mounting plate (2).

10. The multi-stroke heating plate driving device according to any one of claims 1 to 8, characterized in that: There are two groups of linear guide rail pairs (3), and the sliders (301) in the two groups of linear guide rail pairs (3) are fixedly connected to the same connecting plate (9), and the moving end of the telescopic rod group is fixedly connected to the connecting plate (9).

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