Double-plate pin pressing device

Abstract

The invention discloses a double-plate pin pressing device which comprises a base on which a working platform is mounted; an elastic reset part is arranged between the pressing plate and the base; the guide plate is fixed below the pressing plate; the press-fitting shaft penetrates through the guide sleeve of the guide plate and can vertically move relative to the guide plate, a first stop part is arranged on the upper portion of the press-fitting shaft so as to limit the press-fitting shaft from being disengaged from the guide sleeve, and the press-fitting shaft is coaxial with the plate hole; the lower end of the press-fitting shaft is sleeved with a pressing sleeve, the pressing sleeve can move in the axial direction of the press-fitting shaft, and the lower end of the press-fitting shaft is provided with a second stop part to limit separation of the pressing sleeve and the lower end of the press-fitting shaft. A first force application spring sleeves the press-fitting shaft above the pressing sleeve, the first force application spring is used for applying elastic force to the pressing sleeve, and a pin shaft used for riveting the upper plate-shaped workpiece and the lower plate-shaped workpiece is preassembled in the pressing sleeve; and a dynamometer is mounted at the bottom of the pressing plate corresponding to the upper end of the press-fitting shaft.

Description

Technical Field

[0001] The invention relates to the technical field of non-standard equipment design, and in particular to a double-plate pressing pin device. Background Art

[0002] In the prior art, there is a process requirement that two plate-like workpieces need to be riveted using a pin, specifically, Figure 1 As shown, the pin 200 passes through the plate holes 103 of two plate-like workpieces (ie, the upper plate workpiece 101 and the lower plate workpiece 102 ), and the friction between the outer circumferential surface of the pin 200 and the inner wall of the plate hole 103 is used to achieve the attachment and fixation of the two plate-like workpieces.

[0003] In the prior art, a device for riveting two plate-like workpieces using a pin generally includes a placement platform for supporting the two plate-like workpieces, a press shaft located above the placement platform, and a pre-pressing component located outside the press shaft. Before the press shaft presses the pin, the pre-pressing component is first used to press against the upper plate-like workpiece so that the upper plate-like workpiece and the lower plate-like workpiece are as close as possible to each other, so as to meet the process requirement that the gap between the two plate-like workpieces is not greater than a certain set value (e.g., 0.2 mm) after riveting using the pin. Subsequently, the press shaft is driven downward to press the pin into the plate holes of the two plate-like workpieces, thereby completing the riveting process of the two plate-like workpieces using the pin.

[0004] The above-mentioned riveting process and equipment in the prior art have the following problems:

[0005] 1. The riveting force formed by the pin between the two plate-like workpieces (actually approximately equal to the friction force between the pin and the plate-like workpieces) is an important parameter for evaluating the riveting effect, which needs to be greater than a preset value. In the prior art, after the two plate-like workpieces are riveted, special equipment is needed to detect the riveting force of the two plate-like workpieces, which results in cumbersome procedures.

[0006] 2. Before press-fitting the pin shaft, the above device needs to use a pre-pressing device to pre-press the plate-shaped workpiece, and press-fitting can be carried out after pre-pressing. The press-fitting process of the above device needs to be optimized. Summary of the invention

[0007] In view of the above problems existing in the prior art, an object of the present invention is to provide a double-plate pressing pin device to solve the problems in the prior art.

[0008] In order to achieve the above object, the present invention adopts the following scheme.

[0009] A double-plate pressing pin device, comprising:

[0010] A base, on which a working platform is mounted, and the stacked upper plate-shaped workpiece and the lower plate-shaped workpiece are placed on the working platform in such a way that the plate holes are coaxial;

[0011] A pressing plate, which is located above the working platform, and an elastic reset component is provided between the pressing plate and the base;

[0012] A guide plate, which is fixed below the pressing plate, and a guide sleeve is installed on the guide plate;

[0013] A press-fitting shaft, which passes through the guide sleeve of the guide plate and can move vertically relative to the guide plate, a first stopper is provided on the upper part of the press-fitting shaft to limit the press-fitting shaft from escaping from the guide sleeve, and the press-fitting shaft is coaxial with the plate hole; wherein:

[0014] The lower end of the press-fitting shaft is sleeved with a press sleeve, the press sleeve can move axially along the press-fitting shaft, and the lower end of the press-fitting shaft is provided with a second stopper to limit the separation of the press sleeve from the lower end of the press-fitting shaft;

[0015] A first force spring is sleeved on the press-fitting shaft located above the press sleeve, and the first force spring is used to apply elastic force to the press sleeve, and a pin shaft used for riveting the upper plate-shaped workpiece and the lower plate-shaped workpiece is pre-installed in the press sleeve;

[0016] A dynamometer is installed at the bottom of the pressing plate corresponding to the upper end of the pressing shaft.

[0017] Preferably, a positioning guide hole is arranged in the working platform, a positioning pin is provided in the positioning guide hole, and a second force spring is provided in the positioning guide hole below the positioning pin, and the second force spring is used to apply elastic force to the positioning pin so that the upper part of the positioning pin protrudes from the working platform, so that the plate holes of the upper plate-shaped workpiece and the lower plate-shaped workpiece are penetrated by the upper part of the positioning pin.

[0018] Preferably, the press-fitting shaft includes an upper guide shaft and a lower force shaft, a screw is processed on the upper end of the lower force shaft, and a threaded hole is opened on the lower end of the upper guide shaft, and the screw is screwed into the threaded hole. The initial elastic force of the first force spring on the press sleeve is adjusted by adjusting the depth of the screw screwed into the threaded hole.

[0019] Preferably, a magnetic component is fixed to the lower end of the press-fitting shaft, and the magnetic component is used to attract the pin shaft so that the pin shaft is retained in the press sleeve.

[0020] Preferably, a guide column is provided on the base, the guide column is equipped with the pressure plate and slidingly cooperates with the pressure plate so that the pressure plate moves vertically along the guide column, and the elastic reset component is a reset columnar spring.

[0021] Preferably, the number of the press-fitting shafts matches the number of plate holes of the upper plate-shaped workpiece and the lower plate-shaped workpiece.

[0022] Compared with the prior art, the double-plate pressing pin device provided by the present invention has the following advantages:

[0023] 1. Before using the pin to rivet two plate-like workpieces, the press sleeve arranged at the lower end of the press-fitting shaft first pre-presses the two plate-like workpieces to avoid the gap between the two plate-like workpieces being too large to meet the requirements after the two plate-like workpieces are riveted.

[0024] 2. The device can obtain the riveting force of two plate-like workpieces while riveting the two plate-like workpieces, thereby avoiding the need to perform a special riveting force measurement process after the workpieces are riveted.

[0025] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0026] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0028] Figure 1 Schematic diagram of two plate-shaped workpieces in a riveted state.

[0029] Figure 2 A three-dimensional structural view from one perspective of a double-plate pressing pin device provided in an embodiment of the present invention.

[0030] Figure 3 A three-dimensional structural view from another perspective of the double-plate pressing pin device provided in an embodiment of the present invention.

[0031] Figure 4 A front view of a double-plate pressing pin device provided in an embodiment of the present invention.

[0032] Figure 5 A state view of the double-plate pressing pin device provided by an embodiment of the present invention in the guiding stage.

[0033] Figure 6 A state view of the double-plate pressing pin device provided by an embodiment of the present invention in the pre-pressing stage.

[0034] Figure 7 A state view of the double-plate pressing pin device provided by an embodiment of the present invention in the riveting stage.

[0035] Reference numerals:

[0036] 101-upper plate-like workpiece; 102-lower plate-like workpiece; 103-plate hole; 200-pin shaft; 10-base; 11-guide column; 12-reset columnar spring; 20-working platform; 21-positioning guide hole; 22-second force spring; 23-positioning pin; 30-pressing plate; 31-guide plate; 40-pressing shaft; 41-lower force shaft; 42-upper guide shaft; 43-first force spring; 44-magnet; 50-pressing sleeve; 60-dynamometer. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0040] like Figures 2 to 4As shown, an embodiment of the present invention discloses a double-plate pressing pin device, which is used to rivet the stacked upper plate-like workpiece 101 and the lower plate-like workpiece 102 using a pin shaft 200. The device includes: a base 10, a working platform 20, a pressing plate 30, a guide plate 31, a guide column 11, a reset columnar spring 12, a pressing shaft 40, a pressing sleeve 50, a first force spring 43, a dynamometer 60, a positioning pin 23, and a second force spring 22.

[0041] The work platform 20 is arranged on the base 10, and the upper plate-like workpiece 101 and the lower plate-like workpiece 102 are stacked on the work platform 20 in a coaxial manner with the plate holes 103. A positioning guide hole 21 is provided in the work platform 20, and a positioning pin 23 is arranged in the positioning guide hole 21, and a step structure is used to prevent the positioning pin 23 from coming out of the positioning guide hole 21. A second force spring 22 is arranged in the positioning guide hole 21 below the positioning pin 23, and applies an upward elastic force to the positioning pin 23 so that the upper end of the positioning pin 23 extends out of the work platform 20 and passes through the plate holes 103 of the two plate-like workpieces, thereby enabling the plate-like workpieces to be positioned.

[0042] A plurality of guide columns 11 are provided on the base 10, and a reset column spring 12 is sleeved on the guide columns. The pressure plate 30 is located above the working platform 20, and the guide columns 11 pass through the guide sleeves of the pressure plate 30, so that the pressure plate 30 can move vertically along the guide columns, and after the pressure plate 30 moves downward, the reset column spring 12 can drive the pressure plate 30 to move upward and reset by resetting.

[0043] The guide plate 31 is located below the pressing plate 30 and above the working platform 20. The guide plate 31 is fixed below the pressing plate 30 through a column. The upper end of the press-fitting shaft 40 passes through the guide sleeve of the guide plate 31. The press-fitting shaft 40 is coaxial with the positioning pin 23 on the working platform 20, and thus coaxial with the plate holes 103 of the two plate-like workpieces. A retaining ring (as a first stopper) is installed on the upper part of the press-fitting shaft 40 to limit the press-fitting shaft 40 from escaping from the guide sleeve of the guide plate 31.

[0044] The press sleeve 50 is sleeved on the lower end of the press shaft 40, and the press sleeve 50 can move axially along the press shaft 40, and the lower end of the press shaft 40 is provided with a stepped portion (as a second stopper) to limit the press sleeve 50 from being disengaged from the lower end of the press shaft 40. The first force spring 43 is sleeved on the press shaft 40 above the press sleeve 50 to apply a downward elastic force to the press sleeve 50. Preferably, the press shaft 40 includes an upper guide shaft 42 and a lower force shaft 41, a screw is processed on the upper end of the lower force shaft 41, and a threaded hole is opened at the lower end of the upper guide shaft 42, and the screw is screwed into the threaded hole. The initial elastic force of the first force spring 43 on the press sleeve 50 is adjusted by adjusting the depth of the screw screwed into the threaded hole, thereby adjusting the pressure of the press sleeve 50 on the two plate-like workpieces, so as to meet the gap between the two plate-like workpieces after riveting is less than a set value (e.g., 0.2 mm).

[0045] The pin shaft 200 for riveting two plate-like workpieces is pre-placed in the press sleeve 50 , and a magnet 44 is provided at the end of the press shaft 40 , which attracts the pin shaft 200 to prevent the pin shaft 200 from escaping from the press sleeve 50 during press fitting.

[0046] The number of the press-fitting shafts 40 should be the same as the number of the plate holes 103 to be riveted. For example, the number of the press-fitting shafts 40 in the figure is two so as to press two pins 200 into the plate holes 103 at the same time.

[0047] The working process of the double-plate pressing pin device of the present invention is introduced below and the advantages of the device are explained thereby.

[0048] Orientation phase:

[0049] like Figure 4 As shown, first, the upper plate-like workpiece 101 and the lower plate-like workpiece 102 are placed on the working platform 20 in a stacked state, and the positioning pins 23 protruding from the table surface of the working platform 20 pass through the plate holes 103 of the two plate-like workpieces, and the pin shaft 200 is pre-installed in the pressing sleeve 50, and then, the power source (such as a robot arm, a cylinder, an oil cylinder, etc.) drives the pressing plate 30 to move downward, thereby driving the guide plate 31, the pressing shaft 40, and the pressing sleeve 50 to move downward synchronously until the pressing sleeve 50 is pressed against the upper plate-like workpiece 101 outside the pin shaft 200, as shown in FIG. Figure 5 As shown, at this time, the first force spring 43 begins to be compressed, and the upper end of the press-fitting shaft 40 applies pressure to the dynamometer 60. Therefore, the pressure detected by the dynamometer 60 is basically equal to the pressure of the press sleeve 50 on the plate-like workpiece, and is basically equal to the elastic force F1 of the first force spring 43 (the self-gravity of the press-fitting shaft 40, the press sleeve 50, etc., and the friction between the press-fitting shaft 40 and the press sleeve 50 and the guide plate 31 may be ignored).

[0050] Pre-loading stage:

[0051] The power source continuously provides power to move the pressing plate 30 downward. Figure 6 As shown, the press-fitting shaft 40 moves downward synchronously with the pressure plate 30, while the press sleeve 50 no longer moves downward because it is pressed against the upper plate-like workpiece 101. The pressure of the press sleeve 50 on the upper plate-like workpiece 101 increases as the first force spring 43 continues to be compressed. The press-fitting shaft 40 moves downward, causing the pin shaft 200 in the press sleeve 50 to move downward and press against the locating pin 23. The locating pin 23 moves downward (but the upper end of the locating pin 23 has not yet retreated into the plate hole 103). At the same time, the second force spring 22 is compressed. At this time, the dynamometer 60 detects the sum of the elastic force F1 applied by the first force spring 43 and the elastic force F2 applied by the second force spring 22.

[0052] Riveting stage:

[0053] The power source continuously provides power to move the pressing plate 30 downward, and the pressing shaft 40 moves downward synchronously with the pressing plate 30. Figure 7 As shown, the pin 200 pushes against the positioning pin 23, so that the upper end of the positioning pin 23 retreats into the plate hole 103 of the upper plate-like workpiece 101 and then retreats from the lower end of the plate hole 103 of the lower plate-like workpiece 102. In this process, the pin 200 synchronously enters the plate hole 103 of the upper plate-like workpiece 101 and the plate hole 103 of the lower plate-like workpiece 102 in sequence. At this time, the dynamometer 60 detects the elastic force F1 of the first force spring 43, the elastic force F2 applied by the second force spring 22, and the elastic force F2 of the upper plate-like workpiece 101. The friction force F3 between the plate hole 103 and the pin 200 of the upper plate workpiece 101 and the lower plate workpiece 102 can be calculated by checking the elastic force F1 of the first force spring 43 and the elastic force F2 of the second force spring 22 by using a pressure sensor (for example, a strain gauge, not shown). Then, the riveting force of the two plate workpieces can be obtained based on the friction force F3. For example, if the two plate workpieces are riveted by two pins 200, the riveting force between the two plate workpieces is basically F3.

[0054] The double-plate pressing pin device provided by the present invention has at least the following advantages:

[0055] 1. Before the pin 200 is used to rivet two plate-like workpieces, the press sleeve 50 arranged at the lower end of the press-fitting shaft 40 first pre-presses the two plate-like workpieces to avoid the gap between the two plate-like workpieces being too large to meet the requirements after the two plate-like workpieces are riveted.

[0056] 2. The device can obtain the riveting force of two plate-like workpieces while riveting the two plate-like workpieces, thereby avoiding the need to perform a special riveting force measurement process after the workpieces are riveted.

[0057] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0058] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0059] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A double-plate pressing device, characterized in that: include: A base, on which a working platform is mounted, and the stacked upper plate-shaped workpiece and the lower plate-shaped workpiece are placed on the working platform in such a way that the plate holes are coaxial; A pressing plate, which is located above the working platform, and an elastic reset component is provided between the pressing plate and the base; A guide plate, which is fixed below the pressing plate, and a guide sleeve is installed on the guide plate; A press-fitting shaft, which passes through the guide sleeve of the guide plate and can move vertically relative to the guide plate, a first stopper is provided on the upper part of the press-fitting shaft to limit the press-fitting shaft from escaping from the guide sleeve, and the press-fitting shaft is coaxial with the plate hole; wherein: The lower end of the press-fitting shaft is sleeved with a press sleeve, the press sleeve can move axially along the press-fitting shaft, and the lower end of the press-fitting shaft is provided with a second stopper to limit the separation of the press sleeve from the lower end of the press-fitting shaft; A first force spring is sleeved on the press-fitting shaft located above the press sleeve, and the first force spring is used to apply elastic force to the press sleeve, and a pin shaft used for riveting the upper plate-shaped workpiece and the lower plate-shaped workpiece is pre-installed in the press sleeve; A dynamometer is installed at the bottom of the pressing plate corresponding to the upper end of the pressing shaft.

2. The double-plate pressing pin device according to claim 1, characterized in that: A positioning guide hole is arranged in the working platform, a positioning pin is provided in the positioning guide hole, and a second force spring is provided in the positioning guide hole below the positioning pin. The second force spring is used to apply elastic force to the positioning pin so that the upper part of the positioning pin protrudes from the working platform, so that the plate holes of the upper plate-shaped workpiece and the lower plate-shaped workpiece are penetrated by the upper part of the positioning pin.

3. The double-plate pressing pin device according to claim 1, characterized in that: The press-fitting shaft includes an upper guide shaft and a lower force shaft, a screw is processed on the upper end of the lower force shaft, and a threaded hole is opened on the lower end of the upper guide shaft, and the screw is screwed into the threaded hole. The initial elastic force of the first force spring on the press sleeve is adjusted by adjusting the depth of the screw screwed into the threaded hole.

4. The double-plate pressing pin device according to claim 1, characterized in that: A magnetic component is fixed to the lower end of the press-fitting shaft, and the magnetic component is used to attract the pin shaft so that the pin shaft is retained in the press sleeve.

5. The double-plate pressing pin device according to claim 1, characterized in that: A guide column is provided on the base, the pressure plate is mounted on the guide column and is slidably matched with the pressure plate so that the pressure plate moves vertically along the guide column, and the elastic reset component is a reset columnar spring.

6. The double-plate pressing pin device according to claim 1, characterized in that: The number of the press-fitting shafts matches the number of the plate holes of the upper plate-shaped workpiece and the lower plate-shaped workpiece.

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