Automatic reset mechanism for plastic welding screw rod

Abstract

The application discloses a plastic welding screw rod automatic reset mechanism, which comprises a driving mechanism, a reset mechanism and a screw rod piece, the driving mechanism is connected with one end of the screw rod piece, and the other end of the screw rod piece is in interference fit with a plastic fixing block; the reset mechanism comprises a driving unit and a limiting piece, the limiting piece is connected with the screw rod piece, and the driving unit can drive the limiting piece to move. The structure of the application can realize the reset of the screw rod piece, avoids the problems of loosening and cracking of the locking mechanism, and can improve the production safety rate and die changing efficiency, and is convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to a plastic welding screw automatic reset mechanism. BACKGROUND

[0002] The existing welding machine screw cannot be reset after locking, resulting in loosening and cracking of the locking mechanism. Therefore, a mechanism is needed to meet the above requirements. In addition, the structure also needs to solve the problem of loosening and cracking of the locking mechanism caused by sound wave conduction to the locking mechanism. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the present application is to provide a plastic welding screw automatic reset mechanism.

[0004] The present application is realized by the following technical scheme: a plastic welding screw automatic reset mechanism, comprising a driving mechanism, a reset mechanism and a screw member, the driving mechanism is connected with one end of the screw member, the other end of the screw member is in interference fit with a plastic fixing block; the reset mechanism comprises a driving unit and a limiting piece, the limiting piece is connected with the screw member, and the driving unit can drive the limiting piece to move.

[0005] Preferably, the reset mechanism further comprises a fixing block, the limiting piece is arranged in the fixing block, and the fixing block is connected with the output shaft of the driving unit.

[0006] Preferably, the outer periphery of the screw member is sleeved with a shell, and the screw member can slide relative to the shell.

[0007] Preferably, the lower end of the shell is further fixedly connected with a connecting nut, and the plastic fixing block can be in sliding fit with the connecting nut.

[0008] Preferably, the limiting piece is arranged in the screw member.

[0009] Preferably, the plastic fixing block is a nylon fixing block.

[0010] Preferably, the driving mechanism is a servo motor.

[0011] Preferably, the limiting piece is a limiting screw assembly.

[0012] Preferably, the driving unit is a gas cylinder.

[0013] Preferably, it further comprises a base, and the driving mechanism or the reset mechanism is installed on the base.

[0014] The structure of the present application can realize the reset of the screw member, avoid the loosening and cracking of the locking mechanism, and improve the production safety rate and the mold changing efficiency, and is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0016] Figure 1 is a perspective view of the present application.

[0017] Figure 2 is a side view of the present application.

[0018] Figure 3 is Figure 2 is a sectional view of A-A in FIG.

[0019] Figure 4 is Figure 3 is an enlarged view of B in FIG.

[0020] Figure 5 is Figure 3 is an enlarged view of C in FIG. DETAILED DESCRIPTION

[0021] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0022] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "vertical", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0023] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] Reference is made to the accompanying drawings Figure 1 to the accompanying drawings Figure 5 A plastic welding screw automatic reset mechanism, comprising a seat body 1, a driving mechanism 2, a reset mechanism 3 and a screw member 4, the outer periphery of the screw member 4 is sleeved with a shell 41, the lower end of the screw member 4 is interference fit with a plastic fixing block 42, for example, a nylon fixing block, the screw member 4 and the nylon fixing block are interference fit, the lower end of the shell 41 is also fixedly connected with a connecting nut 43, and the plastic fixing block 42 can be slidingly fitted relative to the connecting nut 43. Further, the upper end of the screw member 4 is connected with the driving mechanism 2, for example, a servo motor, which can drive the screw member 4 to move until the locking connecting nut 43.

[0025] The reset mechanism 3 comprises a driving unit 31, a fixing block 32 and a limiting piece 33, the driving unit 31 is installed on the seat body 1, the driving unit 31 is for example a cylinder, which can drive the fixing block 32 or the limiting piece 33 to move; the fixing block 32 is connected with the output shaft of the driving unit 31, and the limiting piece 33 is arranged on the fixing block 32 and inserted into the screw member 4, in a specific embodiment, the limiting piece 33 is a limiting screw assembly. In this way, through the driving unit 31, the fixing block 32, the limiting piece 33 inserted into the screw member 4, the plastic fixing block 42 interference fit with the screw member 4, and the plastic fixing block 42 sliding fit with the connecting nut 43, the automatic reset of the screw member after the welding mold is locked can be realized.

[0026] Specifically, the driving mechanism 2 drives the screw member 4 to lock the connecting nut 43, and the reset of the screw member 4 is driven by the driving unit 31, the fixing block 32 moves upward by for example 35mm, thereby sequentially driving the limiting piece 33, the screw member 4 and the plastic fixing block 42 to move, and the plastic fixing block 42 and the connecting nut 43 can retain a mutual fit height of for example 5mm after the reset of the screw member 4. The structure of the present application can realize the reset of the screw member, avoid the loosening and cracking of the locking mechanism, and at the same time, can improve the production safety rate and the mold changing efficiency, and is convenient.

[0027] The foregoing description has shown and described preferred embodiments of the application, but it will be understood that the application is not limited to the particular embodiments shown and described, as such will have many modifications, permutations, additions and subtractions and changes as are obvious to one skilled in the art, and it is therefore intended to cover all such modifications and changes as fall within the scope of the application, including combinations of the various features described above. Changes and modifications can be made to the application in light of this teaching and it is therefore intended to cover in the appended claims all such changes and modifications that fall within the scope of the application.

Claims

1. An automatic reset mechanism for a plastic welding screw, characterized in that, The device includes a drive mechanism, a reset mechanism, and a screw. The drive mechanism is connected to one end of the screw, and the other end of the screw is interference-fitted with a plastic fixing block. A housing is fitted around the outer periphery of the screw, allowing the screw to slide relative to the housing. The lower end of the housing is fixedly connected to a connecting nut, and the plastic fixing block is slidably fitted with the connecting nut. The reset mechanism includes a drive unit and a limiting member. The limiting member is connected to the screw, and the drive unit can drive the limiting member to move. The reset mechanism also includes a fixing block, on which the limiting member is disposed. The fixing block is connected to the output shaft of the drive unit.

2. The automatic reset mechanism for a plastic welding screw according to claim 1, characterized in that, The limiting member is inserted into the screw member.

3. The automatic reset mechanism for a plastic welding screw according to claim 1, characterized in that, The plastic fixing block is a nylon fixing block.

4. The automatic reset mechanism for a plastic welding screw according to claim 1, characterized in that, The drive mechanism is a servo motor.

5. The automatic reset mechanism for a plastic welding screw according to claim 1, characterized in that, The limiting component is a limiting screw assembly.

6. The automatic reset mechanism for a plastic welding screw according to claim 1, characterized in that, The drive unit is a cylinder.

7. The automatic reset mechanism for a plastic welding screw according to claim 1, characterized in that, It also includes a base, on which the drive mechanism or the reset mechanism is mounted.

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