Semi-automatic mounting equipment for contraction spring

Abstract

A semi-automatic installation device for a contraction spring is used for sleeving the contraction spring on a cylindrical terminal, and comprises a fixing mechanism, an expansion cap and a pushing mechanism. The fixing mechanism is used for fixing the cylindrical terminal; the expansion cap is in a circular truncated cone shape and comprises an upper end face and a lower end face which are oppositely arranged, the lower end face is connected with the end face of the barrel-type terminal, the diameter of the upper end face is smaller than the inner diameter of the contraction spring, and the diameter of the lower end face is larger than the outer diameter of the cross section of the free end of the barrel-type terminal. The pushing mechanism comprises a plurality of expandable contact fingers which are arranged circumferentially; the cylindrical terminal is fixed on the fixing mechanism, the lower end face of the expansion cap is connected with the end face of the cylindrical terminal, the expansion cap is sleeved with the contraction spring from the upper end face, the pushing mechanism moves from top to bottom, a contact finger of the pushing mechanism pushes the contraction spring downwards, and the contraction spring gradually expands in the process of moving along the expansion cap. And finally, the expansion cap is separated and sleeves the cylindrical terminal. Semi-automatic installation of the contraction spring is achieved, installation operation is convenient and easy, and working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical manufacturing, and particularly relates to a semi-automatic installation device for a shrinkage spring. Background Art

[0002] In the field of electrical transmission, cylindrical terminals are often used to connect with columnar terminals for conducting electricity. In order to make the insertion of the cylindrical terminal and the columnar terminal tighter, a ring-shaped shrinkage spring is preset on the cylindrical terminal. After the columnar terminal is inserted into the cylindrical terminal, the shrinkage spring will restrict the elastic piece on the cylindrical terminal, so that the connection between the cylindrical terminal and the columnar terminal is firmer and has better electrical conductivity. The existing installation of the shrinkage spring is completely manually installed on the terminal. Because the shrinkage spring needs to be manually expanded to be sleeved on the cylindrical terminal, the reliability of such installation is low, the efficiency is low, and the manual installation operation is difficult. Therefore, there is an urgent need for a new solution in the prior art to solve the above problems. Content of the Utility Model

[0003] The problem to be solved by the utility model is how to conveniently and quickly sleeve a shrinkage spring on a cylindrical terminal.

[0004] A semi-automatic installation device for a shrinkage spring, which is used to sleeve a shrinkage spring on a cylindrical terminal, includes: a fixing mechanism, an expansion cap and a pushing mechanism;

[0005] The fixing mechanism is used to fix the cylindrical terminal;

[0006] The expansion cap is frustum-shaped, including an upper end face and a lower end face arranged oppositely. The lower end face is connected to the end face of the cylindrical terminal. The diameter of the upper end face is smaller than the inner diameter of the shrinkage spring, and the diameter of the lower end face is larger than the outer diameter of the cross section of the free end of the cylindrical terminal;

[0007] The pushing mechanism includes a plurality of expandable fingers arranged circumferentially. The inner diameter of the free ends of the plurality of fingers in the natural state is larger than the diameter of the upper end face and smaller than the inner diameter of the shrinkage spring;

[0008] The shrinkage spring is sleeved on the expansion cap. The plurality of fingers move axially along the expansion cap and push the shrinkage spring to pass through the expansion cap and be sleeved on the cylindrical terminal.

[0009] The pushing mechanism includes a "C"-shaped bracket, an operating rod, a guide rod, a fixing seat arranged at one end of the bracket, and the fingers installed on the fixing seat. The fixing mechanism is fixed at the other end of the bracket.

[0010] The contact finger is hinged on the fixing seat, one end of the contact finger is connected to the fixing seat through a spring, and the other end is used to contact the contraction spring. When the free ends of the contact fingers move away from each other, the spring is used to provide elastic force to the contact fingers.

[0011] The operating rod is meshedly connected with the guide rod, and the operating rod is rotated to drive the guide rod to reciprocate. The fixing seat is arranged at the end of the guide rod and drives the contact finger to push the contraction spring.

[0012] The plurality of contact fingers are partially surrounded to form a conical cylinder structure, and the cylindrical terminal, the expansion cap and the conical cylinder structure are coaxially arranged.

[0013] The end of the contact finger is provided with a slot at the position of the conical cylinder structure. When the end of the contact finger passes through the lower end surface and returns, the slot engages the edge of the lower end surface and separates the expansion cap from the end surface of the barrel terminal.

[0014] The fixing seat is provided with a support portion inside the contact finger. When the fixing seat is close to one end of the bracket, the support portion opens the free end of the contact finger. When the fixing seat moves toward the expansion cap but does not contact the expansion cap, the free end of the contact finger returns to the minimum inner diameter state.

[0015] The barrel terminal comprises a contact portion and a fixing portion connected in sequence, the contraction spring is sleeved on the contact portion, a plug-in cavity with a one-way opening is arranged in the contact portion, and a fixing column for inserting into the plug-in cavity is arranged on the lower end surface.

[0016] The fixing mechanism has a fixing cavity, wherein one of the inner wall of the fixing cavity and the outer circumference of the fixing part is provided with a circumferential groove, and the other is provided with a protrusion that is engaged with the groove, and the fixing part is inserted into the fixing cavity and fixed by being engaged with the groove and the protrusion.

[0017] The side wall of the fixing mechanism has an opening, the spacing between the openings is smaller than the inner diameter of the fixing cavity, and the barrel terminal enters the fixing cavity along the opening.

[0018] The utility model has the following beneficial effects: the barrel terminal is fixed on the fixing mechanism, the lower end face of the expansion cap is connected to the end face of the barrel terminal, the contraction spring is sleeved on the expansion cap from the upper end face, the pushing mechanism moves downward from the top, the contact finger of the pushing mechanism pushes the contraction spring downward, the contraction spring gradually expands along the process of the expansion cap moving, and finally detaches from the expansion cap and sleeves on the barrel terminal. Semi-automatic installation of the contraction spring is realized, and the installation operation is convenient, simple, and the work efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 This is a schematic structural diagram of a semi-automatic installation device for a contraction spring of the present utility model.

[0021] Figure 2 This is an assembly drawing of a semi-automatic installation device for a contraction spring of the present utility model.

[0022] Figure 3 This is a contact schematic diagram of a semi-automatic installation device for a contraction spring of the present utility model.

[0023] Figure 4 This is a schematic diagram of the contact finger of a semi-automatic installation device for a contraction spring of the present utility model grasping and expanding the cap.

[0024] Figure 5 This is a schematic diagram of a semi-automatic installation device for a contraction spring of the present utility model releasing the expansion cap.

[0025] Figure 6 This is a schematic diagram of the fixed cavity of a semi-automatic installation device for a contraction spring of the present utility model.

[0026] Figure 7 This is a schematic diagram of the groove and protrusion of a semi-automatic installation device for a contraction spring of the present utility model.

[0027] The reference numerals in the figure are shown as:

[0028] 100 - barrel terminal, 101 - contact part, 102 - fixing part, 103 - insertion cavity, 200 - contraction spring, 1 - fixing mechanism, 12 - opening, 2 - expansion cap, 21 - upper end face, 22 - lower end face, 3 - pushing mechanism, 31 - contact finger, 311 - card slot, 32 - bracket, 33 - operating rod, 34 - guide rod, 35 - fixed seat, 351 - supporting part, 352 - connecting rod, 36 - spring, 4 - groove, 5 - protrusion. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0030] A semi-automatic installation device for a contraction spring, used for sleeving a contraction spring 200 on a barrel terminal 100, as Figures 1-7 shown, includes: a fixing mechanism 1, an expansion cap 2 and a pushing mechanism 3;

[0031] The fixing mechanism 1 is used to fix the barrel terminal 100;

[0032] The expansion cap 2 is frustum-shaped, including an upper end face 21 and a lower end face 22 arranged oppositely. The lower end face 22 is connected to the end face of the barrel terminal 100. The diameter of the upper end face 21 is smaller than the inner diameter of the contraction spring 200, and the diameter of the lower end face 22 is larger than the outer diameter of the cross-section of the free end of the barrel terminal 100;

[0033] The pushing mechanism 3 includes a plurality of expandable fingers 31 arranged circumferentially. The inner diameter of the free ends of the plurality of fingers 31 in the natural state is larger than the diameter of the upper end face 21 and smaller than the inner diameter of the contraction spring 200;

[0034] The contraction spring 200 is sleeved on the expansion cap 2. The plurality of fingers 31 move axially along the expansion cap 2 and push the contraction spring 200 to be sleeved on the barrel terminal 100 through the expansion cap 2.

[0035] During use, the barrel terminal 100 is fixed on the fixing mechanism 1. The lower end face 22 of the expansion cap 2 is connected to the end face of the barrel terminal 100. The contraction spring 200 is sleeved on the expansion cap 2 from the upper end face 21. The pushing mechanism 3 moves downward from above. The fingers 31 of the pushing mechanism 3 push the contraction spring 200 downward. The contraction spring 200 gradually expands during the movement along the expansion cap 2 and finally disengages from the expansion cap 2 and is sleeved on the barrel terminal 100.

[0036] In some embodiments, the pushing mechanism 3 includes a "C"-shaped bracket 32, as Figure 1 shown, and an operating rod 33, a guide rod 34, a fixed seat 35 provided at one end of the bracket 32, and the fingers 31 mounted on the fixed seat 35. The fixing mechanism 1 is fixed at the other end of the bracket 32. During use, the operating rod 33 is pulled to drive the guide rod 34, and the guide rod 34 drives the fixed seat 35 to move downward, and the fingers 31 follow the fixed seat 35 to push the contraction spring 200 downward.

[0037] In some embodiments, the fingers 31 are hinged to the fixed seat 35. One end of the finger 31 is connected to the fixed seat 35 through a spring 36, and the other end is used to contact the contraction spring 200. When the free ends of the fingers 31 move away from each other, the spring 36 is used to provide an elastic force to the fingers 31. During the process of the fingers 31 pushing the contraction spring 200 downward, each finger 31 will expand relatively. At this time, the spring 36 generates an elastic force. When the fingers disengage from the expansion cap, the spring 36 will pull the fingers 31 back to their original positions.

[0038] In some embodiments, the operating rod 33 is meshed with the guide rod 34, and the operating rod 33 is rotated to drive the guide rod 34 to reciprocate, and the fixing seat 35 is disposed at the end of the guide rod 34 and drives the contact finger 31 to push the contraction spring 200. The operating rod 33 can drive the guide rod 34 to move linearly to complete the control of the contact finger 31.

[0039] Furthermore, the plurality of contact fingers 31 are partially surrounded to form a cone-shaped structure, and the barrel terminal 100, the expansion cap 2 and the cone-shaped structure are coaxially arranged. The cone-shaped structure can ensure that multiple positions touch the contraction spring 200 at the same time, so that the force is more uniform, and the contraction spring 200 is prevented from not being pushed onto the barrel terminal 100.

[0040] Furthermore, a slot 311 is provided at the end of the contact finger 31 at the position of the cone structure. Figure 3 As shown, when the end of the contact finger 31 passes through the lower end surface 22 and returns, the clamping groove 311 clamps the edge of the lower end surface 22 and separates the expansion cap 2 from the end surface of the barrel terminal 100. In this way, when the contact finger 31 is retracted, the expansion cap 2 can be directly separated from the barrel terminal, reducing the number of working steps.

[0041] In some embodiments, the fixing seat 35 is provided with a support portion 351 inside the stylus 31. When the fixing seat 35 is close to one end of the bracket 32, the support portion 351 props up the free end of the stylus 31. When the fixing seat 35 moves toward the expansion cap 2 but does not contact the expansion cap 2, the free end of the stylus 31 returns to the minimum inner diameter state. The support portion 351 is provided between each stylus 31 and is connected to one end of the bracket 32 ​​by an independent connecting rod 352. After the stylus 31 pushes out the contraction spring, it will move upward with the expansion cap 2 in the process of returning. Figure 4 As shown in FIG. 1 , when the support portion 351 moves to the top, the support portion 351 stops, and the contact finger 31 continues to move upward, and the support portion 351 opens each contact finger 31 from the inside, so that the expansion cap 2 is separated from the contact finger. Figure 5 As shown, the operation is simple.

[0042] In some embodiments, the barrel terminal 100 includes a contact portion 101 and a fixing portion 102 connected in sequence. Figure 6 As shown, the contraction spring 200 is sleeved on the contact portion 101, a one-way opening insertion cavity 103 is provided in the contact portion 101, and a fixing column 23 for inserting into the insertion cavity 103 is provided on the lower end surface 22. The fixing column 23 extends into the insertion cavity 103 to make the connection between the expansion cap and the barrel terminal 100 more reliable, and will not fall off during the process of sleeve contraction spring 200.

[0043] In some embodiments, the fixing mechanism 1 has a fixing cavity 11, a circumferential groove 4 is provided on one of the inner wall of the fixing cavity 11 and the outer periphery of the fixing portion 102, and a protrusion 5 for engaging with the groove 4 is provided on the other, as Figure 7 shown, the fixing portion 102 is inserted into the fixing cavity 11 and fixed by engaging the groove 4 and the protrusion 5. The groove 4 and the protrusion 5 can make the connection between the barrel terminal 100 and the fixing mechanism 1 more firm and not easily separated.

[0044] In some embodiments, the side wall of the fixing mechanism 1 has an opening 12, the spacing of the opening 12 is smaller than the inner diameter of the fixing cavity 11, and the barrel terminal 100 enters the fixing cavity 11 along the opening 12. The barrel terminal 100 enters the fixing cavity 11 through the opening 12, which is convenient for fixing on the fixing mechanism 1.

[0045] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the embodiments. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the embodiments here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A semi-automatic installation device for a shrinkage spring, which is used to sleevethe shrinkage spring on a barrel terminal, and is characterized in that include: Fixing mechanism, expansion cap and pushing mechanism; The fixing mechanism is used to fix the barrel terminal; The expansion cap is truncated cone-shaped, and includes an upper end face and a lower end face that are arranged oppositely, the lower end face is connected to the end face of the barrel terminal, the diameter of the upper end face is smaller than the inner diameter of the contraction spring, and the diameter of the lower end face is larger than the outer diameter of the cross section of the free end of the barrel terminal; The pushing mechanism comprises a plurality of expandable contact fingers arranged circumferentially, wherein the inner diameter of the free ends of the plurality of contact fingers in a natural state is larger than the diameter of the upper end surface and smaller than the inner diameter of the contraction spring; The contraction spring is sleeved on the expansion cap, and the plurality of contact fingers move axially along the expansion cap and push the contraction spring to pass through the expansion cap sleeve and be set on the barrel terminal.

2. The semi-automatic installation device for a contraction spring according to claim 1, characterized in that: The pushing mechanism includes a "匚"-shaped bracket, an operating rod, a guide rod, a fixing seat and the contact finger installed on the fixing seat arranged at one end of the bracket, and the fixing mechanism is fixed to the other end of the bracket.

3. The semi-automatic installation device for a contraction spring according to claim 2, characterized in that: The contact finger is hinged on the fixing seat, one end of the contact finger is connected to the fixing seat through a spring, and the other end is used to contact the contraction spring. When the free ends of the contact fingers move away from each other, the spring is used to provide elastic force to the contact fingers.

4. The semi-automatic installation device for a contraction spring according to claim 2, wherein: The operating rod is meshedly connected with the guide rod, and the operating rod is rotated to drive the guide rod to reciprocate. The fixing seat is arranged at the end of the guide rod and drives the contact finger to push the contraction spring.

5. The semi-automatic installation device for a contraction spring according to claim 4, characterized in that: The plurality of contact fingers are partially surrounded to form a conical cylinder structure, and the cylindrical terminal, the expansion cap and the conical cylinder structure are coaxially arranged.

6. The semi-automatic installation device for a contraction spring according to claim 5, characterized in that: The end of the contact finger is provided with a slot at the position of the conical cylinder structure. When the end of the contact finger passes through the lower end surface and returns, the slot engages the edge of the lower end surface and separates the expansion cap from the end surface of the barrel terminal.

7. The semi-automatic installation device for a contraction spring according to claim 6, characterized in that: The fixing seat is provided with a support portion inside the contact finger. When the fixing seat is close to one end of the bracket, the support portion opens the free end of the contact finger. When the fixing seat moves toward the expansion cap but does not contact the expansion cap, the free end of the contact finger returns to the minimum inner diameter state.

8. The semi-automatic installation device for a contraction spring according to claim 1, characterized in that: The barrel terminal comprises a contact portion and a fixing portion connected in sequence, the contraction spring is sleeved on the contact portion, a plug-in cavity with a one-way opening is arranged in the contact portion, and a fixing column for inserting into the plug-in cavity is arranged on the lower end surface.

9. The semi-automatic installation device for a contraction spring according to claim 8, characterized in that: The fixing mechanism has a fixing cavity, wherein one of the inner wall of the fixing cavity and the outer circumference of the fixing part is provided with a circumferential groove, and the other is provided with a protrusion that is engaged with the groove, and the fixing part is inserted into the fixing cavity and fixed by being engaged with the groove and the protrusion.

10. The semi-automatic installation device for a contraction spring according to claim 9, characterized in that: The side wall of the fixing mechanism has an opening, the spacing between the openings is smaller than the inner diameter of the fixing cavity, and the barrel terminal enters the fixing cavity along the opening.

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