Sheet metal structure for drawer type charging barrel protection

Abstract

The utility model discloses a drawer type charging barrel protection sheet metal structure, which comprises a cover body group and a protective cover, the outer side of the protective cover is provided with a cold rolled steel rail, the cold rolled steel rail comprises a slide rail part and a fixed rail part, the slide rail part is fixed on the protective cover, the fixed rail part is fixed on an external shell, and the fixed rail part is fixed on the outer shell. A propelling baffle is arranged in the protective cover, a propelling point is arranged on the cover body set, and the propelling point can abut against the propelling baffle and drive the propelling baffle to move synchronously. Aiming at the defect that potential safety hazards exist when the charging barrel moves in the prior art, the utility model provides the drawer type charging barrel protection metal plate structure, which can effectively increase the protection stroke and improve the operation safety.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, and specifically relates to a sheet metal structure for protecting a drawer-type barrel. Background Art

[0002] With the development of technology in the era, people's requirements for injection molding machines are getting higher and higher, not only for their reliability, energy saving, floor area, and even noise. New requirements for safety during operation are also put forward. The traditional barrel and nozzle protective covers do not provide high safety protection for operators. When the barrel moves forward and backward, its nozzle part may be exposed, and the heated barrel and materials may harm the operators, posing a safety hazard. Therefore, this utility model patent is invented to meet such safety requirements.

[0003] Chinese Patent Publication No. CN218660192U, Publication Date: March 21, 2023, Invention Name: Sheet Metal Structure of Injection Molding Machine. This application discloses a sheet metal structure for protecting the body of an injection molding machine. The structure is simple and convenient to install and disassemble, reducing the labor intensity of workers, improving work efficiency, and saving assembly costs.

[0004] The above solution is mainly used as a traditional safety protection structure. Its disadvantage is that the sheet metal structure is fixed in one place. When the barrel moves forward and backward, its nozzle part may be exposed, and the heated barrel and materials may harm the operators, posing a safety hazard. Content of the Utility Model

[0005] Aiming at the defect that there are safety hazards when the barrel moves in the prior art, the present invention provides a sheet metal structure for protecting a drawer-type barrel, which can effectively increase the protection stroke and improve the safety of operation.

[0006] To achieve the above object, the present invention adopts the following technical solutions.

[0007] A sheet metal structure for protecting a drawer-type barrel includes a cover body group and a protective cover. A cold-rolled steel track is arranged on the outer side of the protective cover. The cold-rolled steel track includes a sliding rail part and a fixed rail part. The sliding rail part is fixed on the protective cover, and the fixed rail part is fixed on the external housing. A propulsion baffle is arranged inside the protective cover. There is a propulsion point on the cover body group, and the propulsion point can abut against the propulsion baffle and drive the propulsion baffle to move synchronously. This structure enables relative displacement between the cover body group and the protective cover, and direct relative displacement between the protective cover and the housing, greatly expanding the protection stroke.

[0008] The cover body group includes an inner upper cover body, an outer upper cover body is fixed to the outside of the inner upper cover body, and an outer lower cover body is fixed to the bottom of the outer upper cover body. The inner upper cover body is located in the cavity formed by the outer upper cover body and the outer lower cover body, and there is a sandwich layer between the inner upper cover body and the outer upper cover body, which is beneficial to slowing down the rising speed of the temperature of the external sheet metal housing.

[0009] The protective cover is provided with a first inlet and a second inlet. The propulsion baffle is arranged between the first inlet and the second inlet. The propulsion points on both sides of the propulsion baffle include a first propulsion point and a second propulsion point. The propulsion points arranged on both sides can effectively ensure that the sheet metal structure can complete the periodic reciprocating motion.

[0010] The protective cover is provided with a first strengthening bend and a second strengthening bend. The first inlet is arranged on the first strengthening bend, the second inlet is arranged on the second strengthening bend, the propulsion points are aligned with the first inlet and the second inlet, and the propulsion baffle is arranged between the first inlet and the second inlet and can contact the propulsion points on the cover body group. The two strengthening bends can make the appearance of the protective cover more beautiful while reducing the potential safety hazards at the edges.

[0011] The outer upper cover body is a four-fold structure. The outer upper cover body has five faces. Two vertical faces are arranged on both sides of the outer upper cover body, a flat face is arranged on the top of the outer upper cover body, and an inclined face is arranged between the vertical face and the flat face. The four-fold structure of the outer upper cover body enables the cover body group to better cooperate with the plasticizing component.

[0012] The propulsion points are screw groups fixed to the outer upper cover body, with a simple structure and easy to adjust and disassemble.

[0013] The protective cover is a CE protective cover to ensure the safety of the external protection of the sheet metal structure.

[0014] The outer upper cover body is provided with evenly distributed heat dissipation holes to prevent the plasticizing component from overheating and reduce the risk of workers being scalded.

[0015] The outer upper cover body and the inner upper cover body are fixed to the barrel of the plasticizing component on the injection molding machine, providing double protection for the plasticizing component, greatly improving the safety of the plasticizing component, and at the same time reducing the leakage area of the plasticizing component and reducing the safety hazards of the plastic.

[0016] The cover body group moves synchronously with the plasticizing component on the injection molding machine to effectively protect the plasticizing component.

[0017] Adopting the above structure, the utility model has the following advantages compared with the sheet metal structure of the traditional barrel protection component:

[0018] (1) Low space occupation. Since the protective sheet metal is pull-out type, under the same injection stroke, the sheet metal structure for protecting the drawer-type barrel saves more external space than the ordinary protective sheet metal structure and will not cause interference with the rest, being more efficient and safe than the sheet metal structure of the traditional barrel protection component.

[0019] (2) Because when the injection stroke of the sheet metal structure of the traditional barrel protection component is too large, during the retraction process of the plasticizing component, the barrel protective cover cannot completely wrap the nozzle barrel. The sheet metal structure adopting the drawer-type barrel protection can greatly increase its protection stroke, avoiding the operator accidentally touching dangerous objects such as the heated barrel and materials, and greatly improving the safety during operation. Brief Description of the Drawings

[0020] Figure 1 Three-dimensional schematic diagram of the sheet metal structure framework of the present utility model.

[0021] Figure 2 Three-dimensional schematic diagram of the connection of the present utility model with the outside.

[0022] Figure 3 Front view schematic diagram of the whole of the present utility model.

[0023] Figure 4 Full-section schematic diagram of the overall solution of the present utility model.

[0024] In the figure: 1 is the upper body of the inner cover, 2 is the upper outer cover body, 3 is the lower outer cover body, 4 is the inner positioning column, 5 is the outer positioning column, 6 is the protective cover, 6-1 is the first inlet, 6-2 is the propulsion baffle, 6-3 is the second inlet, 7 is the cold-rolled steel track, 7-1 is the slide rail part, 7-2 is the fixed rail part, 8 is the hexagon socket head cap screw, 9 is the screw group, 10 is the housing, and 11 is the plasticizing component. Detailed Description of the Preferred Embodiment

[0025] The present utility model will be further described below in conjunction with the drawings and specific examples.

[0026] In the description of this embodiment, the movement direction of the injection molding machine is used as the front and back description. The forward direction during the operation of the injection molding machine is the front, and the backward direction is the back.

[0027] As shown in the following figure, the main sheet metal structure of the present utility model is composed of main parts such as a framework, a cover body group, an inner positioning column 4, an outer positioning column 5, a protective cover 6, a cold-rolled steel track 7, and a hexagon socket head cap screw 8.

[0028] The hood assembly includes, but is not limited to, the following components: an inner upper hood 1, an outer upper hood 2, and an outer lower hood 3. There are propulsion points provided on the outer upper hood, and the propulsion points are specifically represented by screw 9-1 and screw 9-2 in screw group 9. Among them, during the operation of the injection molding machine, when the plasticizing component 11 moves to a certain position, screw 9-1 can push the protective cover 6 forward to a certain position, and screw 9-2 can push the protective cover 6 backward to its original position. The protective cover 6 can follow the plasticizing component 11 to complete periodic motion. In the hood assembly, the outer upper hood 2 and the outer lower hood 3 are combined into an outer hood, and the inner upper hood 1 is located in the cavity of the outer upper hood. The inner upper hood 1 is connected to the outer upper hood 2 through outer positioning posts 5, and the inner upper hood 1 is connected to the plasticizing component 11 through inner positioning posts 4. In this way, this hood assembly is completely fixed on the plasticizing component 11 of the injection molding machine, and the hood assembly can provide sufficient protection for the plasticizing component 11 throughout the operation of the injection molding machine.

[0029] The cold-rolled steel track 7 is divided into two parts: a slidable rail part 7-1 and a fixed outer fixed-rail part 7-2. The rail part 7-1 can move freely along the track in the middle of the fixed-rail part 7-2. The two parts of the cold-rolled steel track 7 are respectively fixed on the protective cover 6 and the housing 10, used to connect the housing 10 and the protective cover 6, and enable the housing 10 and the protective cover 6 to perform relatively free translational motion along the slidable direction of the cold-rolled steel track 7.

[0030] More specifically, the rail part 7-1 in the cold-rolled steel track 7 is connected to the protective cover 6 by screws, and the fixed-rail part 7-2 is fixed on the external housing 10, i.e., the nozzle protective cover of the injection molding machine. A set of fixed connections is formed between the inner upper hood 1 and the outer upper hood 2 through multiple outer positioning posts 5. At the same time, the inner upper hood 1 is firmly fixed on the plasticizing component 11 through multiple inner positioning posts 4, and the outer upper hood 2 is connected to the outer lower hood 3 by multiple sets of socket head cap screws 8. The socket head cap screws 8 are fixed on the outer upper hood 2. The inner upper hood 1 is located inside the area surrounded by the outer upper hood 2 and the outer lower hood 3, forming a complete hood assembly. At this time, the entire hood assembly composed of the inner upper hood 1, the outer upper hood 2, and the outer lower hood 3 can move synchronously with the movement of the plasticizing component 11, and maintain a synchronous movement state throughout the movement process, providing sufficient protection for the plasticizing component 11 and avoiding potential safety hazards caused by accidental contact by staff.

[0031] Two inlets and a propulsion baffle are provided on the protective cover 6. The inlets are the first inlet 6-1 and the second inlet 6-3. The two inlets are arranged at the front and rear edges of the protective cover to prevent the protective cover from contacting the screw group 9 on the outer upper cover 3. The propulsion baffle 6-2 is arranged inside the protective cover 6 and can contact at most one of the first propulsion point screw 9-1 or the second propulsion point screw 9-2 in the screw group 9 on the outer upper cover 3. The screw 9-1 serving as the first propulsion point and the screw 9-2 serving as the second propulsion point on the screw group 9 are respectively arranged on both sides of the propulsion baffle 6-2 to ensure that during the forward or backward movement of the injection molding machine, when it moves to a certain extent, there is always a screw in the screw group 9 that can serve as a propulsion point to drive the propulsion baffle 6-2, thereby driving the protective cover 6 to move synchronously.

[0032] Furthermore, when the plasticizing component 11 on the injection molding machine retreats as a whole, at this time, the cover group composed of the inner upper cover 1, the outer upper cover 2, and the outer lower cover 3 also retreats with the plasticizing component 11. When the cover group retreats to a certain distance, the screw 9-2 on the screw group 9 on the outer upper cover 2 serving as the first propulsion point will contact the propulsion baffle 6-2 on the protective cover 6. Since the first inlet 6-1 and the second inlet 6-3 allow the screw group 9 to pass through, when the plasticizing component 11 continues to retreat, the screw 9-2 on the screw group 9 on the outer upper cover 2 will contact the propulsion baffle 6-2 and drive the cover group to retreat as a whole through the cold-rolled steel track 7 installed on the protective cover 6. Thus, the safety protection distance of the sheet metal structure for protecting the drawer-type barrel is lengthened. When the plasticizing component 11 on the injection molding machine advances as a whole, when the cover group advances to a certain distance, the screw 9-1 on the screw group 9 serving as the second propulsion point will contact the propulsion baffle 6-2, causing the cover group to retreat back to its original position, completing a complete cycle of movement.

[0033] The outer lower cover 3 is a flat "U"-shaped bottom plate and can be connected to the outer upper cover 2 to form an outer cover. The inner upper cover 1 is placed in the cavity of the outer cover. The cavity formed by the inner upper cover 1 and the outer lower cover 3 is used to protect the plasticizing component 11 on the injection molding machine. At the same time, the inner upper cover 1 is fixed on the plasticizing component 11, and the outer lower cover 3 cooperates with the inner upper cover 1 to firmly clamp the plasticizing component 11, making the connection more stable.

[0034] There is an air interlayer between the outer upper cover 2 and the inner upper cover 1. When the injection molding machine is in operation, the cover group always remains relatively stationary with respect to the plasticizing component 11. Due to the air interlayer in the cover group, during operation, the temperature of the outer upper cover 2 rises slowly. Therefore, even when the cover group is exposed during long-stroke injection, it is not easy for the staff to be scalded if they accidentally touch the cover group, which greatly protects the safety of the staff.

[0035] The various sheet metals described above are all connected by screws, which facilitates the installation and disassembly of the overall sheet metal structure. Moreover, there is no need to specifically design connecting parts and connection structures. One only needs to drill holes according to standard parts and then select standard parts for connection.

[0036] In the above embodiment, the cover body group can move relative to the protective cover 6, and the protective cover 6 can displace relative to the housing 10, forming a double-layer pull-out structure, which greatly expands the protection range of the sheet metal structure for the injection molding machine.

[0037] As Figure 1 shown, there are two cold-rolled steel tracks 7, which are symmetrically arranged left and right, and can ensure the stability of the relative sliding of the protective cover 6 with respect to the housing, and will not affect the movement stability due to uneven force. Similarly, to ensure the smoothness of movement, three or more cold-rolled steel tracks 7 can be provided, and the length of the cold-rolled steel tracks is set within the range of 40 - 120 cm.

[0038] The outer upper cover body 2 adopts a four-fold structure, and this structure is symmetric left and right. As Figure 1 shown, it has five surfaces. The vertical surfaces arranged on the left and right sides and the top surface are inclined surfaces. The inner upper cover body 1 adopts the same structure. Such a structure can better cooperate with the internal plasticizing component 11, and at the same time makes the positioning of the cover body group during sliding easier. Uniformly distributed long strip-shaped heat dissipation holes are provided on all five surfaces, especially the heat dissipation holes on the inclined surface, which improves the heat dissipation efficiency. Heat dissipation holes are provided on multiple surfaces, greatly increasing the heat dissipation area, so that the temperature near the plasticizing component 11 will not be too high, reducing the risk of workers being scalded during work. To better cooperate with the sliding and installation of the outer upper cover body 2, the inner upper cover body 1 and the protective cover 6 are both designed into similar four-fold structures, and uniformly distributed long strip-shaped heat dissipation holes are also provided on the inclined surface of the protective cover 6 for convenient heat dissipation. The included angle between the inclined surface and the top surface of the outer upper cover body 2 is 135 degrees, and the included angle between the inclined surface and the vertical surface is also 135 degrees. At the same time, the included angle between the inclined surface and the top surface of the inner upper cover body 1 is 135 degrees, and the included angle between the inclined surface and the vertical surface is also 135 degrees, which can better cooperate with the plasticizing component 11 on the injection molding machine. The included angle between the inclined surface and the top surface of the protective cover 6 is 135 degrees, and the included angle between the inclined surface and the vertical surface is also 135 degrees, which can better cooperate with the outer upper cover body 2.

[0039] As Figure 4As shown, three reinforcing flanges are provided on one of the left and right sides of the protective cover 6. The side is provided with a screw group 9 corresponding to the outer upper cover 2. The three reinforcing flanges are arranged in parallel and perpendicular to the top surface of the protective cover 6. The reinforcing flanges are divided into two outer flanges and one inner flange. The two outer flanges are the first reinforcing flange and the second reinforcing flange respectively. The first inlet 6-1 is provided on the first reinforcing flange, and the second inlet 6-3 is provided on the second reinforcing flange. The screw 9-1 serving as the first propulsion point and the screw 9-2 serving as the second propulsion point on the screw group 9 are arranged on the straight line where the first inlet 6-1 and the second inlet 6-3 are located, and are respectively located on both sides of the inner flange, so that the first flange 6-1 and the second flange 6-3 provided on the protective cover can allow the screw group 9 provided on the outer upper cover 3 to pass through smoothly. The reinforcing flange where the first inlet is located is close to the inner positioning column 4, and the reinforcing flange where the second inlet is located is on the other side. The inner flange is a propulsion baffle 6-2, which can contact the screw group 9 on the outer cover 3. When the injection molding machine is running, the plasticizing component 11 in the injection state drives the cover group forward. After the injection is completed, when the plasticizing component 11 returns to its original position, it drives the cover group backward. The screw 9-2 on the screw group 9 can drive the protective cover 6 forward when it contacts the propulsion baffle 6-2, and the screw 9-1 can drive the protective cover 6 backward when it contacts the propulsion baffle 6-2, completing a whole complete cycle of movement. To ensure that the protective cover 6 can exactly return to its original position at the end of the operation, the screw 9-1 should be in close contact with the propulsion baffle 6-2 before the injection molding machine starts running.

[0040] The propulsion baffle 6-2 is arranged near the first inlet 6-1, and the distance from the first inlet 6-1 is 10-20 cm, and the distance from the second inlet is 60-100 cm.

[0041] In order to reduce the situation of the cover group swinging left and right relative to the protective cover during the movement process, and make the relative movement and synchronous movement of the cover group relative to the protective cover 6 more stable, the screw group 9 can be symmetrically arranged on the left and right sides of the outer upper cover 2, and the reinforcing flanges are also symmetrically arranged on the left and right sides of the protective cover 6. When the screws 9-1 and 9-2 in the screw group 9 are used as propulsion points respectively, the forces pushing the propulsion baffle 6-2 can be symmetrically distributed. Preferably, two sets of screw groups 9 can be arranged up and down at the same time, and corresponding inlets are provided on the reinforcing flanges to avoid the situation that the cover group swings up and down due to uneven force on the propulsion baffle 6-2, resulting in unstable movement. Further, multiple sets of screw groups 9 can be arranged, and corresponding numbers of inlets are provided on the reinforcing flanges, or one or several large inlets can be directly provided, so that the screw group 9 can pass through the outer reinforcing flanges on the protective cover 6, making the movement more stable without affecting the length of the stroke of the drawable structure.

[0042] The distance between the screw 9-1 and the screw 9-2 inside the screw group 9 can be set to 10 - 100 cm. The protection stroke of the pull-out structure is the distance between the two screws in the screw group 9 plus the length of the cover body group and the stroke of the cold-rolled steel track minus the distance between the propulsion baffle 6-2 and the first inlet 6-1. At the same time, this distance should be greater than the maximum stroke of the injection molding machine during operation to avoid damage to the injection molding machine or the sheet metal structure due to pulling during operation.

[0043] The above is only an illustration of the preferred embodiments of the present invention, but it should not be construed as a limitation of the claims. In short, all changes made within the scope of the protection of the independent claims of the present invention are within the scope of the present invention.

Claims

1. A sheet metal structure for drawer-type barrel protection, comprising a cover body assembly and a protective cover, characterized in that: A cold-rolled steel track is arranged on the outside of the protective cover, and the cold-rolled steel track includes a sliding rail part and a fixed rail part. The sliding rail part is fixed on the protective cover, and the fixed rail part is fixed on the external shell. A propulsion baffle is arranged inside the protective cover, and a propulsion point is provided on the cover body group, and the propulsion point can abut against the propulsion baffle and drive the propulsion baffle to move synchronously.

2. The sheet metal structure for drawer-type barrel protection according to claim 1 is characterized in that: The cover body group comprises an inner upper cover body, an outer upper cover body is fixed on the outer side of the inner upper cover body, and an outer lower cover body is fixed on the bottom of the outer upper cover body.

3. The sheet metal structure for drawer-type barrel protection according to claim 1 is characterized in that: The protective cover is provided with a first entrance and a second entrance, the propulsion baffle is arranged between the first entrance and the second entrance, and the propulsion point includes a first propulsion point and a second propulsion point on both sides of the propulsion baffle.

4. The sheet metal structure for drawer-type barrel protection according to claim 3 is characterized in that: The protective cover is provided with a first reinforced bend and a second reinforced bend, the first reinforced bend is provided with a first entrance, the second reinforced bend is provided with a second entrance, the propulsion point is aligned with the first entrance and the second entrance, and the propulsion baffle is provided between the first entrance and the second entrance and can contact the propulsion point on the cover body group.

5. The sheet metal structure for drawer-type barrel protection according to claim 2 is characterized in that: The outer upper cover body is a four-fold structure, the outer upper cover body has five surfaces, two vertical surfaces are arranged on both sides of the outer upper cover body, a plane is arranged on the top of the outer upper cover body, and an inclined surface is arranged between the vertical surface and the plane.

6. The sheet metal structure for drawer-type barrel protection according to claim 1 or 4 is characterized in that: The pushing point is a screw group fixed on the outer upper cover body.

7. The sheet metal structure for drawer-type barrel protection according to claim 1 or 3 is characterized in that: The protective cover is a CE protective cover.

8. The sheet metal structure for drawer-type barrel protection according to claim 2 or 5 is characterized in that: The outer upper cover is provided with evenly distributed heat dissipation holes.

9. The sheet metal structure for drawer-type barrel protection according to claim 2 is characterized in that: The outer upper cover body and the inner upper cover body are fixed on the barrel of the plasticizing component on the injection molding machine.

10. The sheet metal structure for drawer-type barrel protection according to claim 1 is characterized in that: The cover body group moves synchronously with the plasticizing component on the injection molding machine.

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