A spreading device

Abstract

The utility model belongs to the technical field of packaging equipment, and discloses a propping device. The propping device comprises a main rod assembly and a supporting mechanism, wherein the main rod assembly comprises a main rod body and a sliding sleeve, wherein the sliding sleeve can be slidably sleeved on the main rod body, wherein the supporting mechanism comprises a plurality of supporting assemblies, wherein the plurality of supporting assemblies are arranged on the main rod assembly at intervals around the circumference of the main rod assembly, wherein the supporting assembly comprises a connecting rod, a supporting rod, a first pull rod and a second pull rod, wherein the first end of the connecting rod is pivotally connected to the sliding sleeve, and the second end is pivotally connected to the supporting rod, the first end of the first pull rod is pivotally connected to the main rod body, and the second end is pivotally connected to the supporting rod, the first end of the second pull rod is pivotally connected to the first pull rod, and the second end is pivotally connected to the supporting rod. The propping device has a simple structure and efficient operation. Through the combination of the main rod assembly and the supporting mechanism, the sliding of the sliding sleeve on the main rod body is utilized to link the plurality of supporting assemblies, and the carton or the inner liner bag can be propped open by sliding the sliding sleeve, thereby improving production efficiency and reducing labor intensity.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to an opening device. Background Art

[0002] When producing packaged products, liner bags are usually attached to cartons. Liner bags can prevent moisture and humidity from penetrating, and prevent the goods placed in the cartons from being damaged by moisture. When attaching the liner bag to the carton, the carton needs to be opened first, and then the liner bag is opened. Manually opening the carton or liner bag takes a lot of time and effort, resulting in low production efficiency and high labor intensity.

[0003] Therefore, it is necessary to provide a distraction device to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a propping device with simple structure, efficient operation, convenient storage, improved production efficiency and reduced labor intensity.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A spreading device, comprising:

[0007] The main rod assembly comprises a main rod body and a sliding sleeve, wherein the sliding sleeve is slidably mounted on the main rod body.

[0008] A support mechanism, comprising a plurality of support assemblies, wherein the plurality of support assemblies are arranged on the main rod assembly at intervals around the circumference of the main rod assembly, wherein the support assembly comprises a connecting rod, a supporting rod, a first pull rod and a second pull rod, wherein the first end of the connecting rod is pivotally connected to the sliding sleeve, and the second end is pivotally connected to the supporting rod, the first end of the first pull rod is pivotally connected to the main rod body, and the second end is pivotally connected to the connecting rod, the first end of the second pull rod is pivotally connected to the first pull rod, and the second end is pivotally connected to the supporting rod;

[0009] The sliding sleeve slides toward the first end of the first pull rod so that the support assembly gradually opens to switch to the first state. In the first state, the multiple support rods are parallel to each other; the sliding sleeve slides away from the first end of the first pull rod so that the support assembly gradually retracts to switch to the second state.

[0010] Preferably, the main rod body is provided with a plurality of first mounting protrusions at circumferential intervals, the plurality of first mounting protrusions correspond one-to-one to the first ends of the plurality of first pull rods, the first ends of the first pull rods are inserted into the first mounting protrusions, and the first rotating shaft is inserted into the first mounting protrusions and the first ends of the first pull rods so that the first pull rods and the main rod body are pivotally connected.

[0011] Preferably, the sliding sleeve is provided with a plurality of second mounting protrusions at circumferential intervals, the plurality of second mounting protrusions correspond one-to-one to the first ends of the plurality of connecting rods, the first ends of the connecting rods are inserted into the second mounting protrusions, and the second rotating shaft is inserted into the second mounting protrusions and the first ends of the connecting rods so that the connecting rods and the sliding sleeve are pivotally connected.

[0012] Preferably, one of the main rod body and the sliding sleeve is concavely provided with a guide groove, and the other is convexly provided with a guide block matching with the guide groove, and the guide groove extends along the axial direction of the main rod body or the axial direction of the sliding sleeve.

[0013] Preferably, the cross section of the main rod body is polygonal, and the inner wall of the sliding sleeve fits with the outer wall of the main rod body.

[0014] Preferably, a flexible member is provided at the free end of the support rod.

[0015] Preferably, the flexible member is made of rubber.

[0016] Preferably, the main rod body includes a gripping portion, and a first anti-slip layer is provided on the gripping portion.

[0017] Preferably, the sliding sleeve comprises an operating portion, and a second anti-slip layer is provided on the operating portion.

[0018] Preferably, the number of the supporting assemblies is four.

[0019] Beneficial effects of the utility model:

[0020] The opening device includes a main rod assembly and a support mechanism, the main rod assembly includes a main rod body and a sliding sleeve, the sliding sleeve can be slidably mounted on the main rod body, the support mechanism includes a plurality of support assemblies, the plurality of support assemblies are arranged on the main rod assembly at intervals around the circumference of the main rod assembly, the support assembly includes a connecting rod, a support rod, a first pull rod and a second pull rod, the first end of the connecting rod is pivoted to the sliding sleeve, the second end is pivoted to the support rod, the first end of the first pull rod is pivoted to the main rod body, the second end is pivoted to the connecting rod, the first end of the second pull rod is pivoted to the first pull rod, and the second end is pivoted to the support rod. The sliding sleeve slides toward the first end of the first pull rod so that the support assembly is gradually opened to switch to the first state, in which the plurality of support rods are parallel to each other; the sliding sleeve slides away from the first end of the first pull rod so that the support assembly is gradually retracted to switch to the second state.

[0021] When producing packaging products, first put the opening device in the second state, at which time the support assembly is in the retracted state, and place the opening device inside the carton through the carton opening. Then, hold the main rod body with one hand and slide the sleeve with the other hand to make the sleeve slide toward the first end of the first pull rod, so that the support assembly gradually opens, and then the carton is gradually opened. When switched to the first state, multiple support rods are parallel to each other and are located at multiple corners of the carton in a one-to-one correspondence. At this time, the carton is opened in place, and the reverse operation is to slide the sleeve away from the first end of the first pull rod to switch the opening device to the second state. Take out the stretching device from the inside of the carton; then place the liner bag in the middle of the carton, place the stretching device inside the bag through the bag opening, and then hold the main rod body with one hand, and slide the sleeve with the other hand so that the sleeve slides toward the first end of the first pull rod, the support assembly gradually opens, and then the liner bag is gradually stretched. When switched to the first state, multiple support rods are parallel to each other and are located one by one at multiple corners of the carton. At this time, the liner bag is stretched and fitted on the carton. The reverse operation is to slide the sleeve away from the first end of the first pull rod to switch the stretching device to the second state, and then the stretching device can be taken out.

[0022] This opening device combines a main rod assembly and a supporting mechanism, and utilizes the sliding of a sleeve on the main rod body to link multiple supporting assemblies, so that the opening and retracting of the supporting assemblies can be realized by sliding the sleeve, thereby realizing the rapid opening of the carton or liner bag; by setting up multiple supporting assemblies, it is ensured that the force on the carton or liner bag is uniform during the opening process, thereby improving the stability of the opening; this opening device has a small volume in the second state, which is convenient for storage. This opening device has a simple structure and efficient operation. The carton or liner bag can be opened by sliding the sleeve. The operation is simple and intuitive, which improves production efficiency and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the opening device provided by the utility model in the first state;

[0024] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0025] Figure 3 yes Figure 1 A partial enlarged view of point B in the middle;

[0026] Figure 4 It is a structural schematic diagram of the propping device and the carton provided by the utility model.

[0027] In the figure:

[0028] 100. Carton;

[0029] 1. Main rod assembly; 11. Main rod body; 111. First mounting protrusion; 12. Sliding sleeve; 121. Second mounting protrusion;

[0030] 2. Support mechanism; 21. Support assembly; 211. Connecting rod; 212. Support rod; 213. First pull rod; 214. Second pull rod;

[0031] 3. The first rotating shaft;

[0032] 4. Second rotating shaft;

[0033] 5. Flexible parts. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] When producing packaged products, liner bags are usually attached to cartons. Liner bags can prevent moisture and humidity from penetrating, and prevent the goods placed in the cartons from being damaged by moisture. When attaching the liner bag to the carton, the carton needs to be opened first, and then the liner bag is opened. Manually opening the carton or liner bag takes a lot of time and effort, resulting in low production efficiency and a large workload.

[0039] To solve the above problems, Figure 1-Figure 4 As shown, this embodiment provides a spreading device, which includes a main rod assembly 1 and a support mechanism 2. The main rod assembly 1 includes a main rod body 11 and a sliding sleeve 12. The sliding sleeve 12 can be slidably mounted on the main rod body 11. The support mechanism 2 includes a plurality of support assemblies 21. The plurality of support assemblies 21 are arranged on the main rod assembly 1 at circumferential intervals around the main rod assembly 1. The support assembly 21 includes a connecting rod 211, a support rod 212, a first pull rod 213 and a second pull rod 214. The first end of the connecting rod 211 is pivoted to the sliding sleeve 12, and the second end is pivoted to the support rod 212. The first end of the first pull rod 213 is pivoted to the main rod body 11, and the second end is pivoted to the connecting rod 211. The first end of the second pull rod 214 is pivoted to the first pull rod 213, and the second end is pivoted to the support rod 212. The sliding sleeve 12 slides toward the first end of the first pull rod 213 so that the support assembly 21 gradually opens to switch to the first state. In the first state, multiple support rods 212 are parallel to each other; the sliding sleeve 12 slides away from the first end of the first pull rod 213 so that the support assembly 21 gradually retracts to switch to the second state.

[0040] When producing packaging products, first, the opening device is placed in the second state, at which time the support assembly 21 is in the retracted state, and the opening device is placed inside the carton 100 through the opening of the carton 100. Then, the main rod body 11 is held with one hand, and the sliding sleeve 12 is slid with the other hand so that the sliding sleeve 12 slides toward the first end of the first pull rod 213, and the support assembly 21 is gradually opened, thereby gradually opening the carton 100. When switched to the first state, multiple support rods 212 are parallel to each other and are located one by one at multiple corners of the carton 100. At this time, the carton 100 is opened in place, and the reverse operation is performed, that is, the sliding sleeve 12 slides away from the first end of the first pull rod 213 to switch the opening device to the second state. state, take out the stretching device from the inside of the carton 100; then put the liner bag in the middle of the carton 100, place the stretching device inside the bag through the bag opening, and then hold the main rod body 11 with one hand, slide the sleeve 12 with the other hand so that the sleeve 12 slides toward the first end of the first pull rod 213, the support assembly 21 gradually opens, and then the liner bag is gradually stretched. When switched to the first state, multiple support rods 212 are parallel to each other and are located one by one at multiple corners of the carton 100. At this time, the liner bag is stretched and fitted on the carton 100. The reverse operation is to slide the sleeve 12 away from the first end of the first pull rod 213 to switch the stretching device to the second state, and then take out the stretching device.

[0041] This opening device is a combination of a main rod assembly 1 and a support mechanism 2, and utilizes the sliding of a sleeve 12 on a main rod body 11 to link a plurality of support assemblies 21, so that the support assemblies 21 can be opened and folded by sliding the sleeve 12, thereby realizing the rapid opening of the carton 100 or the inner liner bag; by setting a plurality of support assemblies 21, it is ensured that in the process of opening the carton 100 or the inner liner bag, the force of the carton 100 or the inner liner bag is uniform, thereby improving the stability of the opening; this opening device is small in size in the second state, and is convenient for storage. This opening device has a simple structure and efficient operation. The carton 100 or the inner liner bag can be opened by sliding the sleeve 12. The operation is simple and intuitive, which improves production efficiency and reduces labor intensity.

[0042] It is worth mentioning that the number of support components 21 is determined according to production requirements. In order to ensure the expansion effect, the number of support components 21 is usually set to be the same as the number of corners of the carton 100.

[0043] For example, Figure 1 As shown, there are four support components 21 . In the first state, the four support components 21 can be located at the four corners of the rectangular carton 100 , respectively.

[0044] Specifically, Figure 1 , Figure 2As shown, the main rod body 11 is provided with a plurality of first mounting protrusions 111 at intervals in the circumferential direction, and the plurality of first mounting protrusions 111 correspond to the first end of the first pull rod 213 one by one, the first end of the pull rod is inserted into the first mounting protrusion 111, and the first rotating shaft 3 is inserted into the first mounting protrusion 111 and the first end of the first pull rod 213 so that the first pull rod 213 and the main rod body 11 are pivotally connected. Among them, a groove is provided at the first end of the first pull rod 213, so that after the first mounting protrusion 111 is located in the groove, the first rotating shaft 3 is inserted into the first mounting protrusion 111 and the first pull rod 213 to realize the pivotal connection between the two.

[0045] Specifically, Figure 1 , Figure 3 As shown, the sliding sleeve 12 is provided with a plurality of second mounting protrusions 121 at intervals in the circumferential direction, and the plurality of second mounting protrusions 121 correspond to the first ends of the plurality of connecting rods 211 one by one, and the first ends of the connecting rods 211 are inserted into the second mounting protrusions 121, and the second rotating shaft 4 is inserted into the second mounting protrusions 121 and the first ends of the connecting rods 211 so that the connecting rods 211 and the sliding sleeve 12 are pivotally connected. The second mounting protrusion 121 is provided with a groove, so that after the first end of the connecting rod 211 is located in the groove, the second rotating shaft 4 is inserted into the second mounting protrusion 121 and the connecting rod 211 to realize the pivotal connection between the two.

[0046] It is understandable that the pivotal connections between other components can also be achieved through the above two methods, which will not be elaborated here for the sake of brevity.

[0047] In some embodiments, one of the main rod body 11 and the sliding sleeve 12 is provided with a concave guide groove, and the other is provided with a convex guide block matched with the guide groove, and the guide groove extends along the axial direction of the main rod body 11 or the axial direction of the sliding sleeve 12. The cooperation between the guide groove and the guide block provides a clear path and direction for the movement of the sliding sleeve 12 on the main rod body 11, so that the sliding sleeve 12 can only generate displacement along the axial direction of the main rod body 11, but cannot generate displacement around the circumference of the main rod body 11, thereby ensuring the stability and accuracy of the sliding sleeve 12 during the sliding process and avoiding deviation or shaking.

[0048] In an optional embodiment, the main rod body 11 is provided with a concave guide groove, and the sliding sleeve 12 is provided with a convex guide block; in another optional embodiment, the main rod body 11 is provided with a convex guide block, and the sliding sleeve 12 is provided with a concave guide groove. It can be understood that the specific arrangement of the guide block and the guide groove can be determined according to actual needs and is not limited here.

[0049] In other embodiments, the cross section of the main rod body 11 is polygonal, and the inner wall of the sliding sleeve 12 fits the outer wall of the main rod body 11. The polygonal design prevents the sliding sleeve 12 from circumferentially displacing around the main rod body 11 during the sliding process, and can only slide along the axial direction of the main rod body 11, thereby ensuring the stability and accuracy of the sliding sleeve 12 during the sliding process and avoiding deviation or shaking.

[0050] When the opening device is used to open the liner bag, the free end of the support rod 212 will come into contact with the liner bag. The liner bag is usually made of plastic. During the opening process, the corners of the support rod 212 may scratch or damage the liner bag. In order to solve the above problem, in this embodiment, a flexible member 5 is provided at the free end of the support rod 212. By providing the flexible member 5 at the free end of the support rod 212, the flexible member 5 is in contact with the liner bag to prevent the liner bag from being damaged. Furthermore, the outer contour of the flexible member 5 has no edges and corners, which can further ensure that the liner bag is not damaged.

[0051] Specifically, the flexible member 5 is made of rubber, which has excellent elasticity and good wear resistance and a long service life.

[0052] In this embodiment, the main rod body 11 includes a gripping portion, and a first anti-skid layer is provided on the gripping portion. The first anti-skid layer increases the friction between the hand and the main rod body 11, ensuring that when operating the spreading device, the operator's hand can stably hold the gripping portion to ensure smooth operation. Furthermore, the first anti-skid layer is made of a soft and durable material, such as rubber or silicone, which can provide a comfortable feel and reduce hand fatigue caused by long-term operation.

[0053] Similarly, the sliding sleeve 12 includes an operating portion, and a second anti-skid layer is provided on the operating portion. The second anti-skid layer increases the friction between the hand and the main rod body 11, ensuring that when operating the spreading device, the operator's hand can stably hold the operating portion, ensuring smooth operation. Furthermore, the second anti-skid layer is made of soft and durable materials, such as rubber or silicone, which can provide a comfortable feel and reduce hand fatigue caused by long-term operation.

[0054] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A spreading device, characterized in that: include: A main rod assembly (1) comprises a main rod body (11) and a sliding sleeve (12), wherein the sliding sleeve (12) is slidably mounted on the main rod body (11). A support mechanism (2), comprising a plurality of support assemblies (21), wherein the plurality of support assemblies (21) are arranged on the main rod assembly (1) at intervals around the circumference of the main rod assembly (1), wherein the support assembly (21) comprises a connecting rod (211), a supporting rod (212), a first pull rod (213) and a second pull rod (214), wherein a first end of the connecting rod (211) is pivotally connected to the sliding sleeve (12), and a second end is pivotally connected to the supporting rod (212), a first end of the first pull rod (213) is pivotally connected to the main rod body (11), and a second end is pivotally connected to the connecting rod (211), and a first end of the second pull rod (214) is pivotally connected to the first pull rod (213), and a second end is pivotally connected to the supporting rod (212); The sliding sleeve (12) slides toward the first end of the first pull rod (213) so that the support assembly (21) gradually opens to switch to a first state, and in the first state, the plurality of support rods (212) are parallel to each other; the sliding sleeve (12) slides away from the first end of the first pull rod (213) so that the support assembly (21) gradually retracts to switch to a second state.

2. The expansion device according to claim 1, characterized in that: The main rod body (11) is provided with a plurality of first mounting protrusions (111) at circumferential intervals, and the plurality of first mounting protrusions (111) correspond one-to-one to the first ends of the plurality of first pull rods (213), and the first end of the first pull rod (213) is inserted into the first mounting protrusion (111), and the first rotating shaft (3) is inserted into the first mounting protrusion (111) and the first end of the first pull rod (213) so that the first pull rod (213) and the main rod body (11) are pivotally connected.

3. The expansion device according to claim 1, characterized in that: The sliding sleeve (12) is provided with a plurality of second mounting protrusions (121) at circumferential intervals, and the plurality of second mounting protrusions (121) correspond one-to-one to the first ends of the plurality of connecting rods (211), and the first end of the connecting rod (211) is inserted into the second mounting protrusion (121), and the second rotating shaft (4) is inserted into the second mounting protrusion (121) and the first end of the connecting rod (211) so that the connecting rod (211) and the sliding sleeve (12) are pivotally connected.

4. The expansion device according to claim 1, characterized in that: One of the main rod body (11) and the sliding sleeve (12) is provided with a concave guide groove, and the other is provided with a convex guide block matched with the guide groove. The guide groove extends along the axial direction of the main rod body (11) or the axial direction of the sliding sleeve (12).

5. The expansion device according to claim 1, characterized in that: The cross section of the main rod body (11) is polygonal, and the inner wall of the sliding sleeve (12) fits the outer wall of the main rod body (11).

6. The expansion device according to claim 1, characterized in that: The free end of the support rod (212) is provided with a flexible member (5).

7. The expansion device according to claim 6, characterized in that: The material of the flexible member (5) is rubber.

8. The expansion device according to claim 1, characterized in that: The main rod body (11) comprises a gripping portion, and a first anti-slip layer is arranged on the gripping portion.

9. The expansion device according to claim 1, characterized in that: The sliding sleeve (12) comprises an operating portion, on which a second anti-slip layer is arranged.

10. The expansion device according to any one of claims 1 to 9, characterized in that: The number of the supporting components (21) is four.

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