Pre-pressing jig

Abstract

The utility model relates to the field of watchband assembly, in particular to a pre-pressing jig which is provided with a jig body and a pre-pressing mechanism which is arranged on the jig body in a facing mode and composed of a telescopic component and an execution part which is located on the telescopic component and moves in a following mode. The telescopic component is used for enabling the spring bar kept on the jig body to act on the handle portion of the spring bar in the unfolding direction provided by the telescopic component through the execution portion, the handle portion is made to be close to the perpendicular bisector direction perpendicular to the center axis of the spring bar, and the end portion of the spring bar is made to retract inwards. The spring bar can be kept in a pre-pressing state, the watchband head can be rapidly arranged on the middle section in a sleeving mode when the watchband head is installed subsequently, and for the problem that an existing handle part cannot be pressed, the telescopic component is in an unfolded state, the handle part is pushed through the execution part, so that the two ends of the spring bar are shrunk, and the spring bar can be installed conveniently. Therefore, the assembly between the watchband head grains and the spring bars can be realized.

Description

Technical Field

[0001] The utility model relates to the field of watchband assembly, in particular to a pre-pressing fixture. Background Art

[0002] Watch straps can be divided into metal straps, ceramic straps, leather straps, rubber straps, nylon straps, etc. according to the material, and can be divided into integrated and split types according to the structure.

[0003] The split structure watch strap mentioned above, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the decomposition of the strap head, middle section, and ear. Figure 1 It can produce a three-dimensional picture of the strap head, middle section and spring ears after assembly.

[0004] The above-mentioned parts are used in a way that the ear is inserted into the mounting groove on the middle section in advance, and then the handle on the ear is squeezed to make the two ends of the ear shrink inward, and then the strap head is put on the middle section so that the positioning hole in the strap head corresponds to the position of the two ends of the ear. By releasing the pressure on the handle, the two ends of the ear are reset and inserted into the positioning holes, thereby realizing the assembly between the middle section and the strap head.

[0005] However, the spring ears are small-volume components, and the handle cannot be pressed by fingertips, resulting in the inability to assemble the above-mentioned components. Therefore, there is a lack of auxiliary devices that can achieve the assembly between the above-mentioned components at this stage. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a pre-tightening fixture, which aims to solve the problem that there is a lack of auxiliary devices for assembling the strap head, middle section and spring ears, resulting in the inability to assemble.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a pre-pressing jig, characterized in that it has a jig body, and a pre-pressing mechanism composed of a telescopic member and an actuator located on the telescopic member and performing follow-up movement, which is arranged facing the jig body, and is used to move the ear retained on the jig body to act on its handle in the expansion direction provided by the telescopic member by the actuator, so that the handle moves toward the midline direction perpendicular to the central axis of the ear, so that the end of the ear is retracted inward.

[0008] Furthermore, the telescopic member includes at least two sliding members maintained in relative postures and a pushing unit connected to any one of the sliding members. After the inclined surfaces on the sliding members are in contact with each other, at least one sliding member moves in the direction of the median perpendicular to the central axis of the handle.

[0009] Furthermore, a reset device is provided in the pushing unit for guiding the contraction action of the telescopic member.

[0010] Furthermore, the pushing unit includes a positioning plate, a movable plate, a guide member, and a second return spring. The guide member is fixed on the positioning plate and penetrates into the interior of the fixture body. The second return spring is sleeved on the guide member and is located between the positioning plate and the movable plate. The fixture body is assembled on the positioning plate. The second return spring is used to guide the contraction action of the telescopic member.

[0011] Furthermore, the outer peripheral surface of the execution part has a shape adapted to the inner part of the strap head.

[0012] Furthermore, a positioning groove adapted to the shape of the middle section and the head grain of the strap is provided on the fixture body, and a notch is provided on the bottom surface of the positioning groove so that the execution part can act on the handle through the fixture body.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides an auxiliary device, which can keep the spring ear in a pre-tightened state, so that when the watch strap head is installed later, the watch strap head can be quickly put on the middle section. For the existing problem that the handle cannot be compressed, the telescopic member is in an expanded state, and the handle is pushed by the execution part, so that the two ends of the spring ear are contracted, thereby realizing the assembly between the watch strap head and the spring ear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the assembly relationship diagram between the middle section and the strap head.

[0016] Figure 2 It is an exploded view of the utility model.

[0017] Figure 3 It is another visual stereogram of the utility model.

[0018] Figure 4 It is a three-dimensional schematic diagram of the middle section and the strap head after being assembled in the utility model.

[0019] Figure 5 This is a three-dimensional diagram of the jig body.

[0020] Figure 6 It is a stereogram of the utility model.

[0021] Figure 7 yes Figure 6 Explosion diagram.

[0022] Figure 8 It is a three-dimensional diagram of the utility model after the fixture body is removed.

[0023] Fig. 9This is a diagram showing the positional relationship between the raw ears and the execution unit. DETAILED DESCRIPTION

[0024] See also Figure 1 As shown, Figure 1 The assembly relationship between the middle section 1 and the strap head 4 is shown. Figure 2 An exploded schematic diagram of the utility model is shown.

[0025] from Figure 1-3 It can be seen that the middle section 1 is provided with a mounting groove 1a, and the spring ear 2 is constrained by the mounting groove 1a. Figure 3 It can be seen that the ear 2 has a handle 2a facing downward, and by pushing the handle 2a toward the perpendicular midline P perpendicular to the central axis, Figure 3 It can be seen that an opening leading to the bottom of the middle section 1 is provided on the installation groove 1a, and the handle 2a penetrates the entire middle section 1 through the opening.

[0026] The above-mentioned ear 2 is a prior art, and its specific structure is not described in detail.

[0027] See also Figure 4 , Figure 4 It is a three-dimensional diagram of the utility model. As can be seen from the figure, the utility model is a pre-pressing fixture, which includes a fixture body 5 and a pre-pressing mechanism. The fixture body 5 has a positioning groove 51, and the positioning groove 51 has a shape that is adapted to the middle section 1 and the strap head particle 4 (the assembly between the strap head particle 4 and the middle section 1 is realized on the positioning groove 51). The positioning groove 51 is provided with a notch 51' of the length of the belt. After the middle section 1 is assembled into the positioning groove 51, the handle 2a is facing the notch 51'.

[0028] like Figure 5-8 As shown, the pre-pressing mechanism includes a telescopic member and an actuator 9. In this embodiment, the telescopic member is facing the back of the fixture body 5 facing away from the positioning groove 51. There are at least two telescopic members, and they make a horizontal reciprocating motion relative to the fixture body 5. The actuator 9 is assembled on the telescopic member and is located outside the handle 2a and adjacent to the handle 2a after passing through the slot 51', so that the actuator 9 can touch the handle 2a and push the handle 2a to move when following the movement of the telescopic member, thereby enabling the two ends of the ear 2 to be retracted inward. (As shown in Fig. 9 (shown)

[0029] It is not difficult to see that the telescopic member and the actuator 9 provided by the utility model fully meet the basic conditions required to push the handle 2a to move. For the small-sized ear 2, it is impossible to achieve the purpose of retracting it manually, but it is achieved by means of a pre-tensioning mechanism. In addition, this pre-tensioning mechanism pushes the handle 2a from the bottom of the positioning groove 51, and will not affect the space on both sides of the middle section 1. During assembly, the strap head 4 is directly slid onto the middle section 1 along the inner periphery of the positioning groove 51, and the assembly efficiency is fast.

[0030] In this embodiment, the telescopic member includes a sliding member, and the sliding members are maintained in a longitudinal, relative positional relationship, and the relative end portions of the two members have matching inclined surfaces 6'. The actuator 9 is located on the first sliding member 61, and the second sliding member 62 is assembled on the pushing unit. Under the action of the pushing unit, the second sliding member 62 will squeeze the first sliding member 61 through the inclined surface 6', so that the first sliding member 61 moves toward the mid-perpendicular line P. In actual use, the pushing unit is located on the workbench. By pressing the surface of the fixture body 5 with the palm of the hand, the pushing unit can lift the second sliding member 62, so that the first sliding member 61 pushes the handle 2a. In this regard, the physical structure facilitates the easy transmission of the power applied manually to the actuator 9.

[0031] It should be noted that, in the present embodiment, two first sliding members 61 and second sliding members 62 are provided, and the first sliding members 61 are both mounted on the two ends of the same guide rod (not shown in the figure), and the guide rod is mounted with a first return spring (not shown in the figure). The purpose of the guide rod is to guide the sliding direction of the first sliding member 61 to ensure that the first sliding member 61 deviates, and the first return spring is to reset the position between the first sliding members 61. When the handle 2a is pushed, the first return spring will be compressed between the first sliding members 61. After the force applied by the power source is removed, the stress of the first return spring itself will cause the position of the first sliding member 61 to return to its original position. At this time, the handle 2a will also be reset under the action of the first return spring in the raw ear 2, and the two ends of the raw ear 2 will extend outward from the inside and be inserted into the positioning hole.

[0032] The pushing unit includes a positioning plate 83, a movable plate 82, a guide member 81, and a second return spring (not shown in the figure). The guide member 81 is fixed on the positioning plate 83 and penetrates into the interior of the fixture body 5. The second return spring is sleeved on the guide member 81 and is located between the positioning plate 83 and the movable plate 82. The second return spring is used to guide the contraction action of the telescopic member.

[0033] The outer peripheral surface of the execution part 9 has a shape adapted to the inside of the strap head particle 4 to avoid scratching the inside of the strap head particle 4.

[0034] The execution part 9 is a pressing piece that matches the shape of the handle.

[0035] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A pre-compression fixture, characterized in that: The invention provides a jig body, a pre-tensioning mechanism composed of a telescopic member and an actuator on the telescopic member and arranged facing the jig body, and is used to move the stem ear held on the jig body to its handle in the expansion direction provided by the telescopic member by the actuator, so that the handle ear moves toward the midline direction perpendicular to the central axis of the stem ear, so that the end of the stem ear is retracted inward.

2. A pre-compression fixture according to claim 1, characterized in that: The telescopic member includes at least two sliding members maintained in relative postures and a pushing unit connected to any one of the sliding members. After the inclined surfaces on the sliding members are in contact with each other, at least one sliding member moves in the direction of the median perpendicular to the central axis of the handle.

3. A pre-compression fixture according to claim 1, characterized in that: A reset device is provided in the pushing unit for guiding the contraction action of the telescopic member.

4. A pre-compression jig according to claim 3, characterized in that: The pushing unit includes a positioning plate, a movable plate, a guide member, and a second return spring. The guide member is fixed on the positioning plate and penetrates into the interior of the fixture body. The second return spring is sleeved on the guide member and is located between the positioning plate and the movable plate. The second return spring is used to guide the contraction action of the telescopic member.

5. The pre-compression fixture according to claim 1, characterized in that: The outer peripheral surface of the execution part has a shape adapted to the inner part of the strap head.

6. A pre-compression jig according to claim 1, characterized in that: The fixture body is provided with a positioning groove adapted to the shape of the middle section and the surface band head grain, and a notch is provided on the bottom surface of the positioning groove so that the execution part can act on the handle through the fixture body.

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