Plastic part and metal pipe assembling device

Abstract

The invention discloses a plastic part and metal pipe assembling device. Comprising a base used for placing a plastic part and a metal pipe, a fixing plate arranged on the base and used for limiting the end of the plastic part, two symmetrical pressing plates hinged to the two sides of the fixing plate and used for extruding clamping elastic pieces on the plastic part, and a limiting plate arranged at the outer end of the base and used for limiting the end of the metal pipe. A first air cylinder for extruding the end part of the plastic part is arranged on the base, and second air cylinders for extruding the pressing plate are symmetrically arranged on the two sides of the base. The plastic part and the metal pipe can be automatically assembled only by putting the plastic part and the metal pipe into a worker and then starting the air cylinder, the plastic part and the metal pipe can be conveniently assembled, manpower is saved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of plastic hardware processing, and in particular to an assembly device for plastic parts and metal pipes. Background Art

[0002] Luggage trolleys are accessories for pushing and pulling luggage. They are usually set on one side of the luggage. The trolleys are usually assembled by plastic parts and metal tubes. The plastic parts are provided with a snap-in block or snap-in spring, and the metal tube is provided with a snap-in slot. When assembling, the snap-in block or snap-in spring needs to be inserted into the snap-in slot. The plastic parts on small trolleys have low hardness. The snap-in springs on the plastic parts can be assembled by manual extrusion. However, manual assembly has certain safety hazards. The elastic card and the metal tube will form a gap, which will accidentally pinch your fingers. In order to avoid pinching, you need to be very careful during assembly, which reduces the assembly speed. It is even more troublesome when encountering large trolleys. Due to the high hardness of the plastic parts on the large trolleys, the force of manual hand extrusion cannot reach the pressure required for the deformation of the snap-in spring, which makes it difficult for manual extrusion to assemble the snap-in spring. Generally, two operators are required to assemble. One person uses a pressure clamp to squeeze the snap-in spring, and the other person knocks the plastic parts to clamp them into the metal tube. In this way, the assembly speed is very slow, which greatly affects the production efficiency and wastes manpower. Summary of the invention

[0003] In order to solve one or some technical problems existing in the prior art, the purpose of the present application is to provide a plastic part and metal tube assembly device, which can conveniently assemble plastic parts and metal tubes, save manpower and improve production efficiency.

[0004] In order to solve the above existing technical problems, the purpose of this application is achieved by adopting the following technical solutions: a plastic part and metal tube assembly device, including a base for placing plastic parts and metal tubes, a fixing plate arranged on the base for limiting the ends of the plastic parts, two symmetrical pressing plates hinged on both sides of the fixing plate for squeezing the clamping springs on the plastic parts, and a limiting plate arranged on the outer end of the base for limiting the ends of the metal tubes, a first cylinder for squeezing the ends of the plastic parts is arranged on the base, and second cylinders for squeezing the pressing plates are symmetrically arranged on both sides of the base. The staff only needs to put the plastic parts and metal tubes in and start the cylinders to automatically realize the assembly of the plastic parts and metal tubes, which is very convenient.

[0005] Preferably, the fixing plate is provided with a through hole, and the piston rod of the first cylinder passes through the through hole to squeeze the end of the plastic part. The through hole is used to position the piston rod of the first cylinder to prevent the piston rod from deviating and ensure uniform pressure when the piston rod of the first cylinder squeezes the end of the plastic part.

[0006] Preferably, two brackets are symmetrically arranged on both sides of the base, the second cylinder is arranged on the bracket, and the piston rod of the second cylinder is used to press the pressing plate, thereby reducing the volume of the entire device and making it easier for staff to take or store it.

[0007] Preferably, positioning plates for limiting the position of the metal tube are symmetrically arranged on both sides of the metal tube on the base to avoid the metal tube from deflecting and ensure the assembly accuracy.

[0008] Preferably, rotating shafts are provided on both sides of the fixing plate, and the pressing plate is hinged on the rotating shafts. The structure is simple and the assembly and disassembly is convenient.

[0009] Preferably, the pressure plate is provided with a transfer hole, the rotating shaft comprises a connecting portion, a shaft column connected to the connecting portion, and a stop portion connected to the shaft column, the connecting portion passes through the transfer hole and is connected to the side of the fixed plate, the pressure plate is transferred to the shaft column and can slide along the axial direction of the shaft column, and the stop portion is used to stop the pressure plate. The pressure plate and the rotating shaft are hinged, the structure is simple, and the manufacturing cost is low.

[0010] Preferably, the pressing plate is provided with a sleeve, and the sleeve is connected to the rotating shaft, so that the connection is firm and the assembly and disassembly are convenient.

[0011] Preferably, a return spring is arranged between the tails of the two pressing plates. After the assembly is completed, the return spring drives the pressing plate to return to its original position, so as to facilitate the insertion of the plastic part and the metal tube during the next assembly.

[0012] Preferably, the pressing plate is provided with a torsion spring, which is sleeved on the rotating shaft, and the two ends of the torsion spring are respectively connected to the pressing plate and the fixing plate. After the assembly is completed, the torsion spring drives the pressing plate to reset, which is convenient for putting in the plastic parts and metal pipes during the next assembly, with a simple structure and low cost.

[0013] Preferably, the head of the pressing plate is provided with a protrusion for squeezing and engaging the spring sheet, so as to facilitate further squeezing and engaging the spring sheet inwards, thereby making the assembly smoother.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The plastic parts and metal tube assembly device using the above technical solution only requires the staff to put the plastic parts and metal tubes in and then start the cylinder to automatically assemble the plastic parts and metal tubes. This is very convenient, saves manpower and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 This is a state diagram of assembling a plastic part and a metal tube in Embodiment 1 of the present invention;

[0018] Figure 3This is a schematic diagram of the structure of the assembly of the pressure plate and the rotating shaft in the first embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the pressure plate in the second embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the assembly of the pressure plate and the rotating shaft in the second embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the pressure plate in Embodiment 3 of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of the assembly of the pressure plate and the rotating shaft in the third embodiment of the present invention;

[0023] In the figure: 1. base; 2. fixing plate; 3. pressure plate; 31. adapter hole; 32. protrusion; 33. sleeve; 34. torsion spring; 4. bracket; 5. second cylinder; 6. first cylinder; 7. through hole; 8. positioning plate; 9. limit plate; 10. rotating shaft; 101. connecting part; 102. shaft column; 103. blocking part; 11. reset spring; 12. metal tube; 13. plastic part; 14. snap-on spring. DETAILED DESCRIPTION

[0024] Below, the present application is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0025] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, 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 should not be understood as a limitation on the present application.

[0026] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0027] Embodiment 1:

[0028] like Figures 1 to 3 As shown, the plastic part and metal tube assembly device comprises a base 1 for placing the plastic part 13 and the metal tube 12, a fixing plate 2 arranged on the base 1 for limiting the end of the plastic part 13, two symmetrical pressing plates 3 hinged on both sides of the fixing plate 2 for squeezing the clamping spring 14 on the plastic part 13, and a limiting plate 9 arranged at the outer end of the base 1 for limiting the end of the metal tube 12. The base 1 is provided with a first cylinder 6 for squeezing the end of the plastic part 13, and the base 1 is symmetrically provided with a second cylinder 5 for squeezing the pressing plate 3 on both sides. The staff only needs to put the plastic part 13 and the metal tube 12 in and start the first cylinder 6 and the second cylinder 5 to automatically realize the assembly of the plastic part 13 and the metal tube 12, which is very convenient, saves manpower, and improves production efficiency.

[0029] The fixing plate 2 is provided with a through hole 7, and the piston rod of the first cylinder 6 passes through the through hole 7 and squeezes the end of the plastic part 13. The through hole 7 is used to position the piston rod of the first cylinder 6 to prevent the piston rod from deviating and ensure that the pressure is uniform when the piston rod of the first cylinder 6 squeezes the end of the plastic part 13.

[0030] Two brackets 4 are symmetrically arranged on both sides of the base 1, and the second cylinder 5 is arranged on the bracket 4. The piston rod of the second cylinder 5 is used to squeeze the pressing plate 3. The volume of the entire device is reduced, which is convenient for the staff to take or store. The base 1 can be set as a retractable structure, which is suitable for the assembly of pull rods of different lengths; the brackets 4 on both sides can be set as a structure that is slidably connected to the base 1, which is convenient for adjusting the squeezing position of the second cylinder 5.

[0031] Positioning plates 8 for limiting the metal tube 12 are symmetrically provided on both sides of the metal tube 12 on the base 1. Avoid the metal tube 12 from deflecting and ensure the accuracy of assembly. Rotating shafts 10 are provided on both sides of the fixed plate 2, and the pressure plate 3 is hinged on the rotating shafts 10. A transfer hole 31 is provided on the pressure plate 3, and the rotating shaft 10 includes a connecting portion 101, a shaft column 102 connected to the connecting portion 101, and a blocking portion 103 connected to the shaft column 102. The connecting portion 101 passes through the transfer hole 31 and is connected to the side of the fixed plate 2. The pressure plate 3 is transferred to the shaft column 102 and can slide along the axial direction of the shaft column 102. The blocking portion 103 is used to block the pressure plate 3. The pressure plate 3 is hinged to the rotating shaft 10, and the structure is simple, the manufacturing is convenient, and it is not easy to damage.

[0032] The pressing plate 3 has three main functions: first, it prevents the piston rod of the second cylinder 5 from directly contacting the snap-on spring piece 14 to prevent damage to the snap-on spring piece 14; second, it limits the extended length of the piston rod of the second cylinder 5 to prevent the second cylinder 5 from crushing the snap-on spring piece 14; third, when the first cylinder 6 squeezes the end of the plastic part 13, the entire plastic part 13 moves, and the snap-on spring piece 14 also moves. The snap-on spring piece 14 and the pressing plate 3 are displaced and rubbed, and the surface of the pressing plate 3 is smooth, which further protects the snap-on spring piece 14.

[0033] The head of the pressing plate 3 is provided with a protrusion 32 for squeezing the clamping spring piece 14. The clamping spring piece 14 and the pressing plate 3 are displaced. When the protrusion 32 is reached, the second cylinder 5 continues to drive the protrusion 32 on the pressing plate 3 to squeeze the clamping spring piece 14 inward, so that the clamping spring piece 14 smoothly enters the interior of the metal tube 12. The first cylinder 6 continues to squeeze the end of the plastic part 13, so that the clamping spring piece 14 is clamped into the clamping port on the metal tube 12, and the assembly is completed, which is smoother. The protrusion 32 adopts an arc structure to avoid damaging the clamping spring piece 14.

[0034] A return spring 11 is arranged between the tails of the two pressing plates 3. After the assembly is completed, the return spring 11 drives the pressing plate 3 to return to its original position, so as to facilitate the placement of the plastic part 13 and the metal tube 12 during the next assembly.

[0035] Embodiment 2:

[0036] like Figure 4 and Figure 5 As shown, reference Figures 1 to 3 The structure of this embodiment is basically the same as that of the first embodiment, except that a sleeve 33 is provided on the pressing plate 3, and the sleeve 33 is connected to the rotating shaft 10. The connection is firm, and once a component is damaged, it can be disassembled and replaced, and the disassembly and assembly are convenient.

[0037] Embodiment three:

[0038] like Figure 6 and Figure 7 As shown, reference Figures 1 to 5 The structure of this embodiment is basically the same as that of the second embodiment, except that a torsion spring 34 is provided on the pressing plate 3, and the torsion spring 34 is sleeved on the rotating shaft 10, and the two ends of the torsion spring 34 are respectively connected to the pressing plate 3 and the fixing plate 2. After the assembly is completed, the torsion spring 34 drives the pressing plate 3 to reset, which is convenient for the insertion of the plastic part 13 and the metal tube 12 during the next assembly.

[0039] In this embodiment, there is no need to provide a return spring 11 between the tails of the two pressure plates 3, and there is no need to provide a sleeve 33. The torsion spring 34 plays the same role as the return spring 11 and the sleeve 33, with a simple structure and low cost.

[0040] The above-mentioned implementation modes are only preferred implementation modes of the present application and cannot be used to limit the scope of protection of the present application. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present application shall fall within the scope of protection required by the present application.

Claims

1. A plastic part and metal pipe assembly device, characterized in that: The invention comprises a base (1) for placing a plastic part (13) and a metal tube (12), a fixing plate (2) arranged on the base (1) for limiting the end of the plastic part (13), two symmetrical pressing plates (3) hinged on both sides of the fixing plate (2) for squeezing a clamping spring (14) on the plastic part (13), and a limiting plate (9) arranged at the outer end of the base (1) for limiting the end of the metal tube (12), wherein the base (1) is provided with a first cylinder (6) for squeezing the end of the plastic part (13), and second cylinders (5) for squeezing the pressing plates (3) are symmetrically arranged on both sides of the base (1).

2. The plastic part and metal pipe assembly device according to claim 1, characterized in that: The fixing plate (2) is provided with a through hole (7), and the piston rod of the first cylinder (6) passes through the through hole (7) and squeezes the end of the plastic part (13).

3. The plastic part and metal pipe assembly device according to claim 1, characterized in that: Two brackets (4) are symmetrically arranged on both sides of the base (1); the second cylinder (5) is arranged on the bracket (4); and the piston rod of the second cylinder (5) is used for pressing the pressing plate (3).

4. The plastic part and metal pipe assembly device according to claim 1, characterized in that: Positioning plates (8) for limiting the position of the metal tube (12) are symmetrically arranged on both sides of the metal tube (12) on the base (1).

5. The plastic part and metal pipe assembly device according to claim 1, characterized in that: Rotating shafts (10) are provided on both sides of the fixing plate (2), and the pressing plate (3) is hinged on the rotating shafts (10).

6. The plastic part and metal pipe assembly device according to claim 5, characterized in that: The pressure plate (3) is provided with a transfer hole (31), and the rotating shaft (10) comprises a connecting portion (101), a shaft column (102) connected to the connecting portion (101), and a blocking portion (103) connected to the shaft column (102); the connecting portion (101) passes through the transfer hole (31) and is connected to the side of the fixed plate (2); the pressure plate (3) is transferred to the shaft column (102) and can slide along the axial direction of the shaft column (102); and the blocking portion (103) is used to block the pressure plate (3).

7. The plastic part and metal pipe assembly device according to claim 5, characterized in that: The pressing plate (3) is provided with a sleeve (33), and the sleeve (33) is connected to the rotating shaft (10).

8. The plastic part and metal pipe assembly device according to claim 6 or 7, characterized in that: A return spring (11) is provided between the tails of the two pressing plates (3).

9. The plastic part and metal pipe assembly device according to claim 5, characterized in that: The pressing plate (3) is provided with a torsion spring (34), which is sleeved on the rotating shaft (10), and the two ends of the torsion spring (34) are respectively connected to the pressing plate (3) and the fixing plate (2).

10. The plastic part and metal pipe assembly device according to claim 1, characterized in that: The head of the pressing plate (3) is provided with a protrusion (32) for pressing and engaging the elastic sheet (14).

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